Leo Dooley

* Family
* Allies
* Enemies

**Leo Francis Dooley** is the main protagonist of Disney XD's 2012-2016 comedy television series *Lab Rats*. He was the only son and eldest child of Tasha, the older half-brother of Naomi, the step-son and second-youngest child of Donald, the younger step-brother/cousin and best friends with Adam, Bree, and Chase, the step-cousin of Daniel and Marcus and step-nephew of Douglas. Loyal, caring and intelligent, Leo is initially an outcast until he meets his step-siblings, Adam, Bree and Chase and grows up. His stepfather, Donald had a lack of trust for Leo due to his tendency to accidentally destroy things, but has started to change his opinion, as he made Leo the team's "Mission Specialist."

Midway to Season 3, Leo becomes bionic after Douglas installs them to save his arm after it was crushed by a ceiling beam caused by Taylor when she blasted it on top of him and Donald put bionics in Leo's leg after it was crushed by a space elevator while saving his step-father.

After the Infinity War, Leo left to help Monica Rambeau find out about an anamoly of his old ally Wanda Maximoff (Scarlet Witch)

## Biography

Leo was the only son and eldest child of Tasha Davenport, the older half-brother of Naomi Davenport, the stepson and second-youngest child of Donald Davenport, the step-brother/cousin of Adam, Bree, and Chase Davenport, the step-cousin of Daniel and Marcus Davenport and step-nephew of Douglas Davenport. Loyal, caring and intelligent, Leo is initially an outcast until he meets his step-siblings, Adam, Bree and Chase and grows up. His stepfather, Donald had a lack of trust for Leo due to his tendency to accidentally destroy things, but has started to change his opinion, as he made Leo the team's "Mission Specialist."

Midway to Season 3, Douglas installs bionic implants in Leo's arm to save it after it was crushed by a ceiling beam caused by Taylor. Donald put bionics in Leo's leg after it was crushed by a space elevator while saving his step-father, this making Leo half-Bionic compared to his siblings.

### Early Life

Leo was born May 5, 1999 to Tasha Dooley and an unnamed father. Raised by his single mother, Leo and Tasha were rather close. He tried disencouraging his mother from internet dating, but but nonetheless remained suppportive of her dating millionaire Donald Davenport who, overtime, would consider Leo as a son. However, he never told Tasha or Leo of the three bionic children living in his lab nor of the brother he had lost prior to the series. He always celebrated his birthday with his mother, who once made a cake about the size of him at his thirteenth birthday.

### Befriending the Lab Rats

Sometime after Donald and Tasha's wedding, Leo and his mother moved out of their home and into his stepfather, Donald's new home. Immediately taken with the house, Leo looked around and suddenly bumped into the wall and met Donald's smart home system, Eddy. His step-father gave him directions to his bedroom, however, Leo lost his way and instead came across an elevator and stepped onto it. However, it sent him plummeting to the bottom of the basement, and when Leo exited the elevator, he found himself in a lab and was amazed by it. However, when he heard someone coming, Leo immediately hid behind a group of barrels that were within the labs. He witnessed two boys messing with each other. The younger boy trapped his brother within the other part of a lab. However, an older boy knocked down the gates and preceded in manhandling his younger brother with his super strength. After a girl came in, the oldest boy insulted her and she used his super speed to grab her older brother and ram him up against the barrel where Leo was hiding. Terrified of the older kids' powers and abilities, the group began screaming at each other before Leo fled into the other part of the lab, where he was cornered by the trio of kids. Proceeding to call for his mother, his parents came down stairs and quickly, Leo retreated to his mother. Donald, at first, tried telling his new family that they are part of a boy band with the twist that one of them was a girl. However, because Leo and Tasha could not believe him, Donald revealed t hat they were a trio of bionci super siblings he created: the older boy was Adam with super strength, the girl was named Bree and the youngest Chase, had super intelligence.

Leo was no longer scared of his new step-siblings, but was disturbed by how Donald had fed them pellets instead of actual food and treating them like human lab rats. After watching Chase and his other siblings display their abilites, the trio told Leo about their upbringing. Shocked that they never left the lab, Leo offered to take them to school with him. The trio agreed, but before all four of the siblings could leave the room, they were stopped by Eddy. However, Leo wanted to turn off Eddy after he insulted him and Adam took out the cable cords in Eddy's motherboard before leaving.

#### Showing the Lab Rats the World

Taking the trio to his school, Leo tried to tell them to remain discrete but it was made difficult due to Bree hugging a random lunch lady or Chase falling to the ground, clamping his hands over his ears because of his ultrahearing was not used to the school bell. During gym class, Leo expressed his disappointment at not being physically fit because he could not even throw a ball right. However, Adam picked Leo up and threw him in the air while taking a basketball and making a perfect shot. This caused everyone else to be awed and amazed by his recent skill. During the pep rally later that day, Leo was told how well Adam, Bree and Chase's days were. However, Leo saw Adam's eyes turning red and told Chase about it, who told his stepbrother that Adam's heat vision always acts upwhenever he is upset. Adam ended up unleashing a fire hazard by setting the mascot, Dooey Dingo on fire. At the time, their parents came rushing into the school, with Adam, Bree, Leo and Chase awkwardly waving at Tasha and Donald before their father ordered them to go on the ship.

At home, Leo came into the Lab Rats' defense by believing they had their first freedom for the first time. However, Donald was unfazed, forbidding his step-son from entering the lab again, and banning Adam, Bree and Chase from seeing the outside world. Feeling guilty, Leo arranged a party at the house and informed his siblings of it because they couldn't go to the party. However, as he and his siblings had a good time, they were suddenly in trouble when their parents came home from a dinner date. Donald proceeded in telling his children he was sending them to an off-shore research lab, Facility X. However, Leo showed immediate disappointed. He spent the Lab Rats' last night in the lab by sleepin gin Adam's capsule and hugging his leg.

#### Saving the Lab Rats

As Adam, Bree and Chase were packing, Leo attempted to talk his step-father out of it, but Donald still refused. Seeing his step-son depressed, Donald constructed three robotic look-alikes of the kids. Both Tasha and Leo were disturbed by the concept. When his siblings came upstairs and saw they were being replaced with androids. Leo shared a hug with the trio before they left and he and his mother looked at Donald sharing looks of disappointment. However, as Leo went into the lab, he saw the alleged robots there and coldly pushed them away. He found himself surrounded by the robots and terrified, tried running until Bree stopped him and the trio revealed they were really themselves and sent the robots in their place. Not wanting Donald to send them away again, the group pretended the bionic kids were robots, successfully fooling their parents. However, when Leo went to school the next day, he came home and found out that Tasha and Donald sent the "robots" to a recycling treatment plant, but his parents did not believe him, resulting in Leo going out to rescue them himself but not before Eddy overheard him leaving because of his neglectful parents.

When Leo ended up in the recycling compacter, he found tthat Bree, Adam and Chase had made it safely to the other side and shouted to his older siblings for help. As the Lab Rats re-entered the treatment plan to rescue Leo yet again, he found a red button and pressed it, effectively shutting it off.

The family returned home, where Leo revealed he did not tell Tasha and Donald because he was protecting his friends and still woulld. Sequentially, Donald told Leo that he was allowing the teenagers to stay. in exchange for them going to school, they promised to keep their bionics and abilities a secret. Adam grew too excited, causing Leo and his family to hide as he set off his plasma grenades.

#### First Mission: Runaway Train

The Lab Rats finally went on their first mission that Leo wanted to join them on. However, Donald refused to let him go on a mission to stop a high-speed train because Tasha wanted Donald to watch him. Instead of staying put, Leo snuck into the team's bag that contained the device they needed to stop the train and discarded the object. Within four hours, Leo's presence was noticed by his siblings when he emerged out of the bag when it landed in the trains conductor's cart. The team failed to find a way to stop the train, with Chase panicking and his refusal to remain calm or Donald wanting to save his children and let the train destroy Welkerville. However, when Adam, Bree and Chase remained behind, Leo followed their example and chose to stay as well. Ultimately Leo helped his siblings come up with a solution by taking a rope, tie it around two trees and hope the train will stop upon impact based on Leo watching cartoons all the time. The siblings were successful in their first mission, and shared the glory with Leo, acknowledging their brother with his plan. Donald was relieved that his children and the train was okay. However, when Tasha cought up with the team, she found Leo within the train and threatened to ground him for two weeks before he tricked her into reducing it to one week instead.

#### Considering the Lab Rats his family

During *Leo's Jam*, Leo wanted to take out a girl, Danielle, to an upcoming dance.  Though Adam and Chase tried helping Leo win her over, Danielle was into Adam first when he came out of the fake locker accident they arranged. However, she became attached to Chase, asking him to the dance instead. Tricking Chase into doing a made-up dance, Leo managed to win her over by a series of dance moves, taking her attention away from Chase or Adam. Though he was victorious, Leo realized he hurt his brothers' feelings and turned Danielle down. He apologized to Chase and Adam and called them his brothers. Chase also apologized and the brothers made up.

Later, Leo pulled a sibling card on Bree by having her give him rides to science class after being late. He also advised Chase That Adam might beat him in the student of the semester. At the end, when Bree learned the truth from Ethan, she took Leo to the lab through her super speed and told him to not take advantage of her. Leo apologized to his sister and the two siblings made up.

### Other Misadventures

#### Concert in a Can

   Sometime after so many problems and conflicts, Leo was suspicious of the new kid, Marcus as he began hanging around his siblings, especially with the Concert in a Can Incident. In this, Leo joined the band Marcus, Adam and Chase formed and Marcus framed Leo for wrecking his guitar and he was unable to convince his brothers otherwise because he lied to the Lab Rats before. Eddy revealed to Leo that he knew Marcus had done it via a recording. Leo was about to show his siblings and father the video; however, Marcus beat Leo to it and made it out looking like a victim by claiming he ruined the guitar because he didn't want to get in trouble with his dad. The Lab Rats and Donald bought it and invited him to come for dinner. When Adam, Bree and Chase left the gymnasium, Marcus threatened Leo by saying he was in his way and that there would be further consequences for Leo if he ever tried to rat him out.

#### Mission in Space

However, Marcus's threat didn't stop Leo from trying to expose the truth to his family and that he was up to no good. When Adam, Bree and Chase showed comradery with Marcus, Leo tried stopping his siblings from inviting Marcus to stay with them while his dad went away on business, During this time, Chase discovered he had molecularkinesis which he used on a football to stop a renegade football from hitting Bree. Leo had no idea his brother could do that and they went to the lab, where they learned Chase and the other Lab Rats had hidden bionic abilities. When Marcus came over after being invited by Chase without Donald and Leo's knowledge, Leo was sent by Donald to distract Marcus when he and the Lab Rats went to deal with a mission out in space. Leo chose to distract his step-cousin with one of his mom's magazines. However, Donald dragged Leo away from Marcus and told his stepson his siblings went up into space. During this time, Marcus snuck into the lab, planted a nano-camera and pretended to find it by accident. As Leo searched the house, he made it down to the lab to inform Donald he couldn't find Marcus anywhere until he saw him in Chase's capsule. Donald proceeded to take Marcus home while Leo sat in command of the space mission but unsure of what to do. When the Lab Rats contacted the Lab in hopes of talking to Donald, instead, they got Leo who told his siblings he did not know what to do about Donald but told them what he wanted.

After the mission was a success, Donald told the Lab Rats that Marcus found the lab while Leo mocked his siblings for not believing him when bringing Marcus into their house was a bad thing. However, they just brushed their brother off.

## Personality

Being a teenager in high school, Leo is still trying to find his place in it and in the world. At the beginning of the series, he was in still in his clumsy phase. However, Leo can be arrogant at times, though not as much as his stepfather, Donald. He is very close with his family and will do anything to protect them, as he went the distance to save the Lab Rats from dying in the future and his willingness to prove that Marcus and his father were evil and up to something. He could also be a rebellious teenager like he's mother Tasha was when she was younger and often disobeying his parents, siblings or his uncle Douglas. He is very protective of his family, even risking his life to see who Marcus really was and knowing he meant trouble for Adam, Bree and Chase. In Season 3, Leo had begun maturing, and inventing things without breaking Donald's things, such as inventing orbs that he invented so they could protect Adam, Bree, and Chase from Douglas and Krane. Though the orbs went haywire, but Donald admitted Leo had a good concept going on. It is shown at this point, Leo was also willing to put the past behind himself and his enemies if they show change, as he did with Douglas in "Taken" and Taylor (S-1) in "One of Us." He willingly listened to what Douglas had to say about Victor Krane and agreed to a fresh start with Taylor, eventually becoming friends with both them.

Despite not having super intelligence like Chase, Leo was quite intelligent teenager and was mentioned being the smart kid in school in the episode's premiere, mentioning it's not easy for him to Chase and the other Lab Rats. He is also quite intelligent, shown that he never liked Marcus even before it was revealed that Marcus was evil. Leo could also come up with plans for the missions, eventually becoming the team's strategic mission specialist. Like his brother Chase, Leo will sometimes remind people of the bigger picture, shown at least twice. The first time he reminded his siblings that they had to save Donald during the jet wing incident because he did the stupid stunt to give them the Lab back, causing Bree to realize their brother was right. Another time happened in "Which Father Knows Best?" where Leo told Douglas to get past his rivalry with his brother after Leo told him Donald couldn't fix Bree's chip when she broke it because Bree was more important. Additionally, Leo scolded his siblings for causing a blackout and fighting in "Rise of the Secret Soldiers." He also easily deduced that Douglas was behind cyberhacking Donald back when he was evil. Characters such as Douglas has said that Leo is a smart kid ever since the Marcus incident.

Ever since his mother married Donald, Leo remained supportive of her decision. After meeting his siblings, he wanted to become bionic like them, dropping hints to Donald. However, he always refused in account for what Douglas did to Adam, Bree and Chase; however, Douglas ended up giving Leo bionics to save his arm. The boy was excited but reckless with his bionics, something that caused Leo to connect Daniel with. Even after being bionic, Leo saw the bionics as an opportunity to help save people whenever it is needed. He is indeed, very brave, as he risked his life to save his siblings countless of times. In Mission Mania, Leo realized Adam, Bree and Chase went on missions because they saved people. He had once selflessly saved Adam, Bree and Chase from being crushed by a large mountain of rubble and pulled Chase from falling off the Hurst Memorial bridge. Like his uncle and brother, Leo could feel looked down on or overshadowed by his older siblings, similar to how Chase felt when Adam and Bree are praised more than him in "Avalanche" and how Douglas felt with Donald all of his life. This is shown in "Lab Rats: On the Edge," where he expresses hope that his siblings don't see him as just their little brother. After saving Chase and taking charge, Donald realizes Leo is ready and levels him up to mentor, where Chase tells Leo he is proud of his little brother. He also expressed hope to Bree and Chase that he would see his brother and sister again.

## Appearance

Leo is a teenage boy who is seen at the ages of thirteen and sixteen, with dark skin, dark brown eyes and curly black hair. Initially, he is fairly short, reaching up to Chase's shoulder, but overtime, he grew taller than Bree, and was nearly Chase's height. However, by season 4, Leo was the taller than Chase, becoming the second-tallest of the Lab Rats, reaching past Adam's shoulder.

Throughout the series, Leo's wardrobe changes. In Season One and Two, Leo wore colored shirts with pictures on it, but this more or less disappeared as it went on. Most notably in the second season, he wore long-sleeved shirts with short-sleeves over them. The only episodes he has not worn long sleeve T shirts is in Crush, Chop and Burn, and No Going Back, where he wore just a T-shirt instead. However, from Season 3 onwards, Leo mostly wore hoodies, long-sleeved shirts, and mostly shirts with button-up sweater with his sleeves rolled up. In "Rise of the Secret Soldiers," Leo gets a mission suit that is slightly different than Adam, Bree's and Chase's. Instead, he wears a black leather jacket that also has a hood. However, his right arm sleeve is red; Leo also has black pants with black pads on his knees and black combat boots.

## Powers and Abilities

### Bionic Abilities

* **Bionic Arm:** After Leo's arm was crushed by a ceiling beam caused by Taylor when she was known as S-1, Douglas Davenport healed it with bionic components after learning his step-nephew would never be able to use his arm again. It gave him secret abilities so Leo could have a defense skill after his experiences from Krane and Marcus.
	+ **Super Strength:** Leo has strength in his arm similar to his stepbrother, Adam, being able to lift a couch with his one arm and punch a dent in the wall. When he first got Bionics, Leo used his right arm and hand to shake Perry's but crushed her hand without realizing he was using strength. Though his bionic strength can hold well on its own, if not that heavy or held on to for a long periods of time, Leo will start to lose his grasp on it. Though he one stopped a helicopter from falling off the edge of a building, the weight eventually caused Leo to be lifted into the air but stopped it from falling off. Luckily, Adam, Bree and Chase came to help him. He was also able to stop a space Elevator from falling, but the weight began to overwhelm Leo to the point it cost him his left leg.
	+ **Laser Sphere Generation:** Douglas gave Leo the ability to generate laser spheres in his hand. It is Leo's primary ability, and he uses it to knock out dangerous opponents, such as Victor Krane and S-1. However, his laser Spheres can also set things on fire, like Douglas' hair or Janelle's stand during her science fair.
		- **EMP Generation:** Combined with Taylor's abilities, Leo and Taylor can create an EMP generation that can take out anything. The first time they did it blew out the electricity on Bionic Island and when they did it a second time, Leo accidentally caused her to go permanently blind. A third time, they were able to use the EMP ability to take out the safety lock that kept Donald and Leo's entire family locked in their self-driving car.
	+ **Energy Transference:** Douglas unlocked this ability for Leo during the Battle of the Bionic Soldiers. It allows him to absorb energy from another source of power. He can also use it in Battle, as he used it to take out Taylor back when she was only S-1. Leo used it to stop a space elevator by absorbing its kinetic energy before using his super strength.
* **Super Durability:** Leo bionic arm and leg are more durable than his non-bionic limbs. For example, when he attempted to punch a hole in the wall during The Vanishing, he showed no pain in putting a dent in the wall not when he kicked Eddy with his Bionic leg.
* **Bionic Leg:** Leo was given a bionic one by Donald after his original was crushed by a space elevator. It is more powerful than his bionic arm, being able to cut through the metal cage he, his siblings and the students were trapped in.
	+ **Super Kick:** Leo's leg can kick pretty far, as he was able to kick Adam's baseball and kick Eddy up into the air. His kick was able to break through a wall.
* **Two Simultaneous Abilities:** When stopping an accelerated space elevator while supposedly saving his father, Leo used his super strength to stop the elevator and absorbed the kinetic energy to slow it down.

### Skills

* **Leadership/Expert Battle Tactician:** Despite being irresponsible at first, throughout the years, Leo became a capable leader. Chase tells Tasha that Leo knows how to remain calm in dangerous situations and take control whenever they are on missions. This is shown in the episode Forbidden Hero, where Leo directed Adam on rescuing his mother. In Lab Rats: On the Edge, Leo managed to lead Logan and Taylor in rescuing his family. He directed Taylor with creating their EMP Generation ability and then use Logan's Energy Manipulation ability to direct the EMP to a device that was keeping Leo's family locked in the self-driving limo. Because of his leadership, Donald promoted Leo to mentor and Chase acknowledged that Leo was meant to be a hero.
* **Martial Arts:** It is shown that Leo can use martial arts like the Lab Rats, though it seems he can only use martial arts when he was bionic. However, in Taken he used it to try to take down Douglas, who points out how bad Leo is at it. Leo eventually improved because Donald trained him.
	+ **Skilled Fire-Staff Fighter:** In Alien Gladiators, he is seen beating many competitors in the competition even the most skilled ones. He is a formidable fire-staff warrior and even defeated Donald Davenport, who is very skilled in martial arts, weaponry, and fire-staff, itself.

## Weaknesses

### Glitches

* **Super Strength Unawareness:** Though his super strength cannot glitch, Leo sometimes remains unaware that he is using his bionic strength, lifting one of the couches in his living room when he was looking for his smart phone.
* **Bionic Sleepwalking:** Because Leo's arm was not calibrated properly into his nervous system without a capsule, it caused Leo to sleep walk while using his laser sphere ability. However, Douglas gave Leo an arm capsule to stop this from happening.
* **Uncontrollable Laser spheres:** Sometimes, Leo cannot have control of his laser spheres, as they set off uncontrollably when he is sleepwalking. They usually activate uncontrollably when Leo is excited (as he nearly set Douglas' hair on fire), panicking nearly burned Janelle alive, or irritated (by a fly, Leo's laser sphere blasted).

## Equipment

* **Security Orbs:** In the episode "Scramble the Orbs," Leo created them to protect his siblings from Victor Krane and his step-uncle and their creator, Douglas Davenport. However, the security orbs malfunctioned, as they were unable to tell the difference between a friendly threat and a real threat. They eventually destroyed themselves; despite it being a failure, Donald thought they had potential.
* **Capsule:** Leo created a medical capsule that would diagnose people's illnesses and the data would show up on his computer. It was based on Eddie's smart home system. Ended in failure when Leo accidentally transferred Eddy into the pill and it let take control of his mother's body
* **Exoskeleton:** Leo once went in his step-father's Exoskeleton to demonstrate it but Chase messed with it out of jealousy that Donald was paying more attention to Leo than him. He later used it when storming into Douglas' lair.
* **Mission Suit:** Leo got one in "Rise of the Secret Soldiers" arc. Leo's is different than Adam, Bree and Chase's in terms of style. It is able to withstand any harshness of climate or temperature.

## Alternate Versions

### Leo Dooley (Opposite Universe)

**Opposite Leo Dooley** is the Opposite Mission Creek Counterpart of Leo Dooley. Unlike his real-world counterpart, this Leo however is evil and popular in school and athletic but only Bionic in the arm (unlike Leo who is Bionic in the arm by Douglas and real-world the leg by Donald). This Leo was also raised by Douglas alongside Adam, Bree and Chase. He is A Bionic Supervillain like the rest of his family but he does really care about anything about his family like the real Leo. He tries to be reckless with Adam, but his oldest brother makes sure he is on the path of evil. Often dragged into Chase's schemes and taken to places with Bree.

### Lea Dooley-Davenport

**Lea Dooley-Davenport** is the female counterpart to Leo Dooley. She is a Bionic Hero like her counterpart and had Laser Sphere Generation and Energy Transference. Lea handles situations just like Leo and she is shown to be a bit clumsy just like real Leo.

## Family

### Tasha Davenport (Mother)

Tasha is Leo's mother who he is rather close to. The premiere episode implied they had already been living in Mission Creek prior to her marrying Donald. Leo supports her marriage to Donald; however, Leo told his mother to stay away from online dating when they meet Adam, Bree and Chase for the first time and he sometimes wonders how they ended up together.

When Leo received bionic implants, Tasha was initially furious, but mainly with Douglas, and she often berates Douglas or Donald if Leo's bionics go haywire. She has chosen to support Leo for her son's sake. When Tasha revealed she was pregnant with her and Donald's first child, Leo was happy for his mother and gave her a hug, promising to protect his sister after she was born.

### Donald Davenport (step-father)

Donald is Leo's stepfather and has been since 2012. Since Leo's biological father is never mentioned, Leo appears to be close to Donald as his father-figure. Donald tries too hard to bond with Leo, and once blew it with him when Donald revealed to Tasha Leo's secret crush when Leo wanted the secret kept between them.

Leo mainly calls him "Big D" because of his position as head of the Davenport Household. However, Leo doesn't have the best relationship with him, even admitting he's not all that good. At the time of season 2 Leo and Donald appeared to get along better, as Donald begins trusting him with missions and being a part of the team. He is fairly protective of Leo as much as the lab rats, as he shouted for Douglas to leave his son alone and was relieved to see his son alive when Leo came in the middle of the battle between the Team and Douglas and Marcus Davenport.

Since Leo matured, Donald finally trusts his stepson, like allowing him to invent things in the lab without Donald in the room and allowing him to find sponsors for his J-Wing stunt. Donald was also concerned for Leo when he learned that his son had been gravely injured, especially when the family feared Krane had kidnapped Leo again; Donald was relieved to see his son and Douglas when they were cornered by Krane and Donald immediately asked Leo if he was alright. However, Donald was angry to learn that his brother gave his son bionics, fearing Tasha's wrath. The Bionic Academy is founded, Donald passes Leo over as a mentor and tells him he has to be a student instead. At the end of Season 3, Donald promotes Leo to a higher level, from beginner to intermediate. In "Unauthorized Mission", Donald is nearly killed trying out Chase and Sebastian's latest virtual reality stimulation, causing Leo to rush to Donald's side and look at him in concern. Unknown to them, Sebastian rigged the stimulation, hoping to get revenge on Leo, the rest of the Lab Rats by taking away their father.

Donald does consider Leo his son, according to the episode "Bionic Houseparty." In "On the Edge," Donald proudly announces Leo is the next mentor after he proves to be courageous in battle by rescuing their family from the Hurst Memorial Bridge. Leo was also happy for Donald and Tasha when they announced that they were going to have a baby girl together.

### Adam Davenport (older Adoptive brother/step-cousin)

Out of all their siblings, Leo and Adam appear to be the least close, but they care about each other as brothers. They first met in "Crush, Chop and Burn" when Leo accidentally discovered Donald's lab. In the show, Leo will sometimes get annoyed with Adam's stupidity and out of the two of them, Leo appears to be more responsible. Despite this, Adam loves Leo as much as he does his other siblings and will be protective over him, as one of Adam's hidden abilities showed up when he saw Marcus about to kill Leo again. They hang out together, such as "Adam Up." Adam also worried for Leo when his arm got crushed by Taylor and Adam drove the protesters (including Principal Perry) away from Leo with his breath ability. He was proud of his younger brother when he went on his first official mission with them.

Currently, Leo and Adam are running what is left of the Bionic Academy, allowing room for them to grow closer.

### Bree Davenport (older adoptive sister/step-cousin)

Bree is Leo's older step-sister/step-cousin, and they first met in "Crush, Chop, and Burn," where Leo accidentally stumbled upon her and her brothers. He was the first one to show Bree the real world and how to be a teenage girl. Bree makes it her responsibility as Leo's older sister to see her younger brother following the right path, as she told him to take the blame and tell Perry he cheated off of Bree on her test. Leo tried everything to restore Bree's chip, even going to Douglas, the man who originally created it, to help them.

Like Adam, Bree can be protective of Leo, as she was concerned for her brother when he was trapped in the training room with the rest of the bionic soldiers and was scared when Sebastian ordered them to take him out.

### Chase Davenport (Adoptive Brother)

Chase is Leo's cousin/step-brother and Leo appears to be closer to Chase than the rest of his siblings. They are a lot alike, given that they are the youngest members of the Lab Rats, are very intelligent and good with technology, close in age (with Chase being the oldest of the two) and both got bullied by Trent and picked on by Adam and Bree, and they both snuck Douglas into the lab at one point.

Leo and Chase meet in” Crush, Chop and Burn”, when Leo accidentally stumbled across a secret elevator and found a lab within his step-father's basement. Chase was the first bionic teenager Leo had seen and was scared of his unknown step-siblings. However, Leo grew more relaxed when Donald explained who the three siblings were and admittedly, both Leo and Tasha were disturbed by how Donald treated the kids, such as making them eat fiber pellets that fell from the top of their capsules into their arms. When Chase first met Leo, he could barely stand him but quickly warmed up to Leo when he took them to school and showed Chase (and Adam and Bree) the outside world for the first time. Leo establishes that Chase, Adam and Bree as his best friends and was sadden to see them gone when Davenport was going to send them to Facility X in the Frozen tundra. Chase called Leo the first friend they ever had (with Adam correcting them that Leo was their only friend. Leo admitted that in their short time together, he came to love them, which Leo unknowingly admitted to the Lab Rats when Leo thought they just robots at the time. Later, when Davenport and Tasha told Leo that they sent the "robots" to a recycling department and went to rescue them. Chase was immediately concerned when he first saw Leo fall into the recycling bin and sprang into action to save his stepbrother, along with their other siblings. After seeing the kids use their bionics, Donald decided that the kids could stay and Leo was overjoyed. In "Leo's Jam," Later, Chase and Leo fall in love with the same girl, along with Adam. Despite winning Danielle, Leo chooses to apologize to Adam and Chase for sabotaging their chances with Danielle and calls them his brothers. Chase later acknowledges Leo as his brother in "Exoskeleton vs. Grandma," where Chase and Leo apologize to each other.

In "On the Edge," when Leo discovers a new ability called EMP generation with Taylor, Chase forbade Leo from ever using the ability because it proved to be too dangerous to use. However, the two disobeyed Chase, and used the ability again; however, the EMP generation resulted in Leo permanently blinding Taylor. The older Davenport brother scolded Leo for causing her danger and deems him unworthy of being a leader. Leo takes his brother's words at heart, especially after learning Taylor will never see again, and decides to quit the team and the academy and move back to Mission Creek. Chase never meant for Leo to quit, possibly thinking he had been a little harsh on his brother, and he felt that Leo should stand with them during the award ceremony because he was a hero just like them. Later, Chase and their family are trapped on the Hurst Bridge and Leo goes to rescue them. On the mission, Leo refuses to give up on saving Chase, who tells his younger brother to let go or the car will take him too; Leo refuses and saves his brother from falling and the two brothers hug each other, glad the other is safe from harm and finally reconciling. Afterwards, Leo is able to stand next to his siblings and later, Chase congratulates his brother to finally making it, claiming he couldn't be any prouder than him.

### Douglas Davenport (Uncle)

Douglas is the brother of Leo's step-father, Donald, thus making Douglas his step-uncle. They were bitter enemies, but at the time, Leo did not know of his relation to Douglas until "Bionic Showdown." However, Douglas went to Leo for help about Krane and despite his past feelings, Leo decided to listen. Leo's the first to believe Douglas, who tells Leo that he must talk to Donald because his step-father will believe him. Despite believing Douglas, Leo does not defend him and just watches as Donald orders for his brother to leave.

By the second half of season 3, Leo and Douglas were friends, especially after going to his step-uncle for help in fixing Bree's chip. After Leo's arm is crushed, Douglas shows concern for him and tries pulling off the ceiling beam that fell off of him and when he can't do that, Douglas goes to the firemen to save Leo. After learning from the doctor that Leo will never be able to use his regular arm again, Douglas refuses to let that happen and takes Leo to Krane's Warehouse and uses bionic components to save his listen. Leo's them being on the government's good side, Douglas urges Leo to keep his bionic arm a secret because they would take Leo away and Douglas would end up in Federal prison. He also reveals that he made a remote that turns Leo's bionics on and off for the safety of himself and others. Leo steals the remote and activates his bionics. Douglas realizes this and confronts Leo at school, where he sees that his nephew was trying to impress a girl. Douglas promises to teach Leo how to use his arm properly.

When Leo glitched for the first time, he attacked Douglas in his sleep. Chase began to blame Douglas for never giving Leo a capsule because he was responsible for giving the kid a bionic arm int he first place. He didn't want anyone to wake Leo up in fear for his nephew's safety because it could potentially make Leo explode. After the ordeal, Douglas gives Leo an arm capsule for him to wear in his sleep. Douglas made Leo Daniel's mentor because he thought he was responsible and later scolded Leo for giving his son a chip upgrade when he specifically told him not to and later, Douglas saved his nephew's life when he liquefied Marcus as he tried to fight Leo.

### Daniel Davenport (Step-Cousin)

Daniel is Leo's younger step-cousin. Ever since Douglas introduced Daniel to the Academy, Leo could relate to Daniel a lot, as he shared much of Leo's same experiences of feeling wanted in his family, and was reckless with his bionics much like Leo was when he first received his bionics. Daniel was glad to make Leo and his siblings' acquaintances, mainly because Daniel was glad to have more family members

Leo and Daniel grew closer because of their many similarities, as Leo told his cousin to give Douglas a chance. Daniel eventually became one of Leo's students, and he continued to teach him how to properly control his bionics.

## Friends

### Taylor

Taylor and Leo used to be mortal enemies, and she tried to kill him at least twice and she was the main reason that Leo's arm was permanently damaged and why Douglas had to fix it with bionics. He later battled her in "Rise of the Secret Soldiers," where Leo managed to finally overpower her. However, because she was under the Triton App, Taylor did not recall Leo because she was a blank slate like all the other soldiers, meaning her actions of crushing Leo's arm was not of her own accord. Taylor met him again in "One of Us," where Leo knocked her out because he thought she was a threat to his friends. However, the two decided to forget move on in the past and finally, they became friends.

The two became extremely close, afterwards, and discovered a new ability. By joining their hands, they could make a laser sphere so powerful it could knock out all the lights in the Academy. However, this new power caused Leo to accidentally disable Taylor and make her go permanently blind. Despite it being an accident, Leo quit the Bionic Academy and was haunted by what he had done to Taylor. However, Taylor did not blame Leo because it was just an accident. She later called Leo when his family was in danger, as they were trapped in a self-driving car and together, the two managed to save Leo's family by disabling the safety lock device on Davenport's limo, where Taylor told Leo that blinding her was only an accident

### Logan

> I love you guys!
>
> Logan to his teammates

Logan is one of Leo's best friends and a teammate in his own team after Leo grew tired of living in his older siblings' shadow. It is revealed that Logan hero-worshipped Leo, inspired by how he was once a normal kid before becoming bionic.

Logan followed Leo's lead when they were rescuing Leo's family.

### Bob

Despite appearing in smaller scenes with Bob, they appear to be good friends due to their close relationship with Adam. Since Bob was controlled by Victor Krane, it's implied the two were enemies when the Bionic Soldiers under the influence of the Triton App. When Spin goes to call Leo for help, Bob happily tells his brother to tell Leo that he (Bob) said "hi." However, Leo appears to enjoy teasing Bob at times, because in that same scene, Leo joked with Spin and Bob, taking a selfie with the two to prove how ridiculous they looked. He scolded Bob and Spin for deleting the mission and going on it on their own and despite teasing them about getting stuck in quicksand, Leo was able to pull them out while lifting a log with his bionic arm, thus saving the duo.

At times, Leo can get annoyed by Bob's stupidity as much as he does with Adam, as he groaned in annoyance when they both touched a skull that was poisoned with a virus Douglas created after Leo and his siblings had already dealt with it when it was taken in by Chase and Bree. Nevertheless, the two help each other, as Leo was able to convince Bob and Spin to help him escape the bionic soldiers when he was imprisoned with them by Sebastian, Lexi, and Tank.

## Enemies

### Marcus Davenport

Marcus was an Android created by Donald's brother Douglas, therefore Leo's step-cousin. While Adam Bree and Chase were convinced that Marcus was a nice and troubled boy, his act does not fool Leo Dooley, who was the only one to dislike Marcus even before he knew they were family. Marcus framed Leo for breaking his guitar and later, even he was exposed, Marcus revealed his true colors to Leo afterwards threatening him if he ever tried busting him again. Overtime, Marcus came to hate Leo, who mutually hated him back. In Speed Trapped, Marcus tried having Leo killed by imprisoning him in Donald's self-driving car and when he was saved by the Lab rats, Leo learned that Marcus was bionic just like his siblings. Marcus threatened to reveal his siblings' secret to the authorities and therefore Leo's father would be sent to prison and Adam, Bree, and Chase would be taken away by the government.

Leo tried keeping Adam, Bree and Chase away from Marcus, and even risks his life to expose Marcus to protect his family and later, Leo manages to outsmart Marcus by having the robot Marcus apprehended Leo with by pretending to shake his hand, only to lick his hand, remembering how Chase managed to defeat Adam in an arm-wrestling match. With Marcus distracted, Leo was able to escape but the evidence he had against Marcus was ruined when Leo's phone fell through Davenport's latest teleportation device. After Marcus and Douglas kidnapped Donald and trapped the Lab Rats in a bionic blocking cage, Leo was forced to save his family but was confronted by Marcus, who had every intention of killing him after being told by Douglas to do so. However, Leo managed to outsmart him yet again, this time by hiring a protective vest that his father created. Marcus was upset to learn that Leo had survived when he came crashing down in Donald's exoskeleton creation. Marcus tried to kill Leo yet again until Marcus intervened to protect his younger brother by locking his new ability and blasting Marcus away from Leo. Marcus was later killed by a pile of rubble, ending Marcus' threat to Leo for the time being.

In season 4, Leo and his siblings were shocked to learn that Marcus was resurrected by Giselle Vickers at least two years later and in return, Marcus was (slightly) shocked to learn that Leo was bionic that time. Leo never got the chance to defeat Marcus due to Daniel replicating Marcus's abilities and destroying him. When Marcus regenerated after Leo has thrown his dismantled parts on the floor, the two cousins prepared to fight to the death until Douglas melted Marcus second time, while ironically rescuing Leo from him.

### Victor Krane

An enemy Leo first encountered when Krane abducted him and his mother to get Donald to release Bree, Adam and Chase, Leo and Tasha were nearly killed by this madman. He later confronted Leo and Douglas at the high school. Krane is also indirectly responsible for damaging Leo's arm because he had S-1 attempt to crush Leo with a ceiling beam to keep him and his family out of the way. However, when that failed, Krane tries to get rid of Leo and Douglas again, and was surprised when he learned Douglas gave his friend bionics to heal his arm, failing to kill Leo at least three times. During "Rise of the Secret Soldiers," Krane brutally injured Leo's father, Donald, however, this enemy was later defeated by Leo's siblings when they combined their bionics.

Leo, like everyone else, thought Krane to be dead until "Space Colony," where Krane was revealed to be alive, and wished to fight against Krane when he put his parents under the Triton App. This time, Krane died for real in Davenportia by Chase's hand.

### Giselle Vickers

Seeing that Leo is Douglas' nephew and a member of his family, Giselle hates Leo as much as Adam, Bree and Chase, even resurrecting their old enemy, Marcus Davenport to get vengeance on his father. Prior to her betrayal, Leo was a major fan of her films. He tries impressing her when Leo first meets her to get a character inspired by him to appear in her movie *Bionic Action Hero*, even interrupting his uncle's date with her. When it's revealed she is evil, Leo loses his respect for her especially since she tried to kill the Davenport family and kidnapped Chase to get his intelligence. In the finale, Giselle mocks Leo for being bionic in the arm and the leg. However, she underestimated the kids because Leo was the only one who could break from Giselle's cage (which blocked the Bionic Teenagers' bionic abilities but Leo because he did not have a chip.) She had no qualms to harming Leo, his siblings or his newfound cousin, Daniel, despite them being children, as Giselle wanted to watch Douglas and Donald suffer as she harmed their children.

## Romantic Relationships

### Janelle

Janelle is Leo's primary love interest in the series through Season 1 to 3 and season 4. He developed a crush on her sometime after his crush on Danielle, recounting that he and Janelle met when he accidentally wandered into the girls' bathroom. Leo confided to Donald about his romantic feelings for her and tried being flashy for Janelle because he was nerdy. When she shows up at the door because Tasha invited her, Leo tried to act cool around her but in truth, Leo did not want Janelle there but was not saying it to be mean. Following this, Leo failed to impress her until he borrowed his stepfather's helicopter and took Janelle out on a flight. She was finally starting to develop a crush on Leo. In "Air Leo," Janelle tells Leo that even though he did not win the one-on-one tourney against Trent, she was still glad that he tried his hardest, despite initially thinking Leo couldn't stand a chance against him. In "Back from the Future," Janelle invites Leo to a movie and in the same Episode, Leo learns from his future self that he and Janelle will one day marry each other. However, Leo misses the date that was supposed to bring them closer together, as Leo chose to save his siblings over going on the date with Janelle. He tells her the truth the next day but Janelle writes him off and walks away. However, the two seemed to have reconciled, since in "Avalanche," Janelle came over to Leo's house and revealed she liked coming over to the Davenport Household because she liked Leo for the he was rather than the things he owned, rather inventions that Leo stole from his stepfather. However, he accidentally freezes her with Donald's new freeze ray. Despite this, Janelle comes back to Leo's house to watch a movie with him. When Rose comes to visit, she does everything she can to get rid of Janelle by tormenting her and being rude to her. Janelle tried being nice to Grandma Rose for Leo's sake but got fed up when Rose continued being rude to her. Leo wished his grandmother would back down because he wanted to spend time with Janelle, who felt the same way. It took a while for him to get rid of his grandmother but Leo was able to continue his relationship with Janelle.

By season 3, Janelle considered Leo bad luck due to past incidents, such as recounting him freezing her with Donald's freeze ray. However, she invited him to her play and Leo decided to support her (Janelle was previously upset that he apparently hated the idea of coming but Leo accepted it. She was later angry when Leo's defense orbs came and he inadvertently ruined her play. After the world found out Leo's siblings were bionic, Janelle was impressed with Adam, causing Leo to grow jealous. When he tried showing her his bionics, Leo found that he couldn't (because of Douglas deactivating his bionics) and Janelle did not believe him. When Leo reactivated his bionics, he nearly killed Janelle with his laser sphere but proved he was telling the truth.

At the end of season 3 Leo shows her the bionic Academy by getting past Chase; Leo tries impressing Janelle but Spin, one of the students there, pretends to get hurt by Leo's laser sphere generation and make Leo look bad. However, Spin is eventually busted. In Season 4, it is revealed that Leo and Janelle are still dating despite the incident with Spin in her last appearance. She wanted to spend more time with Leo due to his duties on the island and threatened to break up with him if he did not visit her on the mainland once in a while.

It is revealed in "One of Us" that they are dating but not boyfriend and girlfriend

### Danielle

Danielle was the name of a girl that Leo had a crush on in the episode "Leo's Jam." He has in love with her so much that he would often act as a footstool for her two-layer feed on instead of the ground and sent her at least 87 e-mails. Additionally, she doesn't remember er Leo's name and calls him Lenny. However, both Adam and Chase also fought over Danielle as she kept turning her attention to each of the three Dooley-Davenport brothers and at the dance, Leo won Danielle over with a dance he performed with his aunt and her book club. However, Leo realizes what he did was wrong to his brothers and apologize to them. Danielle is never seen nor mentioned again afterward and since Leo has a crush on Janelle, he no longer has a crush on Danielle.

### Shelley

Shelly was the name of a Droid phone that Leo had an unhealthy crush on in "Bionic Dog." Bree found this disturbing and pointed out that it was wrong for Leo to have a crush on an inanimate object. As soon as Bree changed the phone settings to Liam, a phone with a British accent, the two siblings fought over it. At the end of the episode, Otis urinates on it, passing both Leo and Bree to lose their interest on the phone.

## Crossover Relationships

### Piper Hart

Piper has a crush on Leo but stops crushing on him when she sees he has a girlfriend, Taylor.

### Rocket Raccoon

They appear to get along well. After meeting Leo and learning he had a Bionic arm, Rocket asked for it until Leo pointed out his arm was still attached to his body and that he had Bionic implants that help keep his arm functioning and not a prosthetic arm like Bucky Barnes. However, Leo has a sense of a higher maturity then Rocket.

## Trivia

* Leo was the shortest member of the family, the only normal kid and the youngest (younger than even Chase).
	+ He is now the second-tallest, a bionic teenager since the Season 3 Episode, "You Posted What?" and second-youngest since the discovery of his cousin, Daniel ("And Then There Were Four").
* In the beginning of the series, Leo was thirteen years old.
	+ He turned fourteen in "Bionic Birthday Fail"
	+ He is sixteen by season 3. (Three Minus Bree) and the beginning of season 4 ("Under Siege").
	+ He is (presumably) seventeen by the series finale.
* He was Tasha's only biological child until the birth of her daughter and Leo's sister Naomi. (*Lab Rats: Elite Force*)
* Leo shares some similarities with his brother, Chase:
	+ They are the youngest members of the four main siblings.
	+ They are often teased by Adam and Bree, however, they both get along better with Bree than they do with Adam, who also teases them about their height.
	+ At one point, they also snuck Douglas into Davenport's lab. (however, Chase lured him there and Leo brought him to the lab to fix Bree's chip.
	+ Anti-social and both mocked for their intelligence. (Leo mentioned how hard it is being the smart kid in school)
	+ They often feel overshadowed by their older siblings (Chase gets hurt by the lack of respect his team has for his intelligence, and Leo feels inferior to Adam, Bree, and Chase because they are all bionic humans, and later, because they doubt, he has it in then to be more than being the youngest).
	+ Leo grew taller in between Season 2 and 3 and his voice deepened
	+ They also get annoyed by Davenport's big ego, because whenever Donald tries to improve something, he always lets his big ego get in the middle while he tries improving his younger sons' lives.
	+ Leo also shares some similarities with his cousin, Daniel:
		- They lived their whole lives without bionics.
		- Excited but feeling lost when in their family, the Davenports.
		- They get reckless with their bionics when they first got them.
		- They later became mentor and student.
* Leo went on his first mission in "Rise of the Secret Soldiers" and got his first mission suit in the same episode of the same name.
* According to Donald, he cannot handle high fiber cereal.
* Douglas implies he left a pen in Leo's bionic arm.
* On Adam's website, it says he's the 8-year-old mascot called Leo Clooney (Rise of the Secret Soldiers).
* According to Douglas Donald killed most (if not all) of Leo's pets.
* He was the only main character that wasn't originally a mentor at The Davenport Bionic Academy, he was a student. (First Day of Bionic Academy). He did eventually become one in "Lab Rats: On the Edge."
* Leo's the one who grew up the most of all his siblings. His voice deepened in Season 3 and he grew taller than Bree and around the same as Chase around the season as well.
* Season 3 has a subplot about Leo becoming bionic. The episode "Parallel Universe" foreshadows him becoming bionic (an episode in Season 2) and the beginning "You Posted What?" foreshadows Leo being able to shoot laser spheres from his fingers where Perry tells the students, "Get to class before they shoot missiles from [Bree, Adam and Chase's] fingers]." In the episode *Alien Invasion*, Leo's right arm was grabbed by Perry and he is seen clutching onto it. This possibly foreshadows Leo gaining a bionic injury and

## References

1. ↑ Crush, Chop, and Burn
2. ↑ Crush, Chop and Burn: Part 2
3. ↑ Lab Rats: Episode 1.06
4. ↑ Lab Rats: 3.14 You Posted What?! Part 2
5. ↑ Lab Rats: 3.
15 Armed and Dangerous