Leo Dooley/Synopsis

The synopsis of Leo Dooley throughout the Lab Rats franchise. 
==Overview==
Leo is the main protagonist of the series due to him discovering Adam, Bree and Chase in his step-father's basement. He is the third youngest kid of the Dooley-Davenport family as Adam, Bree and Chase's adoptive younger brother and step-cousin, Marcus's younger step-cousin, and Daniel's older step-cousin, Tasha's only son, Donald's stepson and Naomi's older half-brother, Rose's grandson, and Janice Dooley's and Douglas Davenport's nephew. 
Leo was the only normal kid in the family until "You Posted What?!?" where Douglas gives him bionics in his arm and Donald gives Leo a bionic leg in "Space Elevator." Later, Leo served as a mentor towards his cousin Daniel after the latter learned he was bionic most of his life. 
Currently, Leo is a mentor at the Davenport Bionic Academy, overseeing the students' progress as superheroes with Adam. Donald and Douglas alternate between helping the brothers and Bree and Chase in the Elite Force. 
==Background==
Leo's life prior to the series is mostly shrouded in mystery; however, it is known that he was born on May 5, 1998 to Tasha Dooley. The identity of his father is never revealed, implying that Tasha either divorced him or he died from unknown reasons. In any case, Leo was already being raised by a single mother.
He and Tasha were never apart on his birthday, and it was said she made a birthday cake for Leo that was just as tall as him for his thirteenth birthday. It is also known that Leo wasted his time playing video games, loved comics and science, and was often picked on by other students due to being the smart kid. He also warned his mother about online dating when she married Donald. After his mother married Donald, Leo gained a stepfather, and unknowingly, three Bionic step-siblings.
It is also implied that him and Tasha have been living in Mission Creek since before they moved in with Donald, as Leo was already acting like he went to school there at Mission Creek High. 
==Season 1==
====Crush, Chop, and Burn====
Leo makes his first official appearance in the lab rats premiere "Crush, Chop And Burn" where he and his mother Tasha move in with her new husband, the millionaire and inventor, Donald Davenport. Inside, Leo meets Eddy his step-father's home computer and accidentally discovered three bionic siblings living in his basement: Adam, Bree, and Chase while trying to find his way around the house. At first, Leo is scared of the siblings, as his screams alert his parents. Tasha is additionally shocked to discover what her son stumbled upon until Donald introduces his wife and stepson to the siblings and tells them their purpose: to use their bionic abilities to go on missions. Leo is slightly disturbed by how Donald treats them, such as making them eat food pellets and shower in their capsules, and after learning the kids never left the basement him to offer showing his school to the siblings. The kids are excited to the new world that their stepbrother showed them, however, Adam ends up glitching with his heat vision and the siblings are busted by Donald and Tasha. Afterwards, Leo throws a party in the house while his parents are gone for Bree, Adam and Chase. However, the siblings are busted again, which causes Donald to snap and propose he is sending them to one of his remote facilities, Facility X. 
Donald built three look-alike robots of the real Adam, Bree, and Chase to make up for their absence as they train at Facility X. Leo gives his new friends a heartfelt goodbye. However, Leo is in the basement with what he believes to be the robots, when they reveal to Leo that they are the real Adam, Bree and Chase and sent the robots in their place. The plan worked until Tasha and Donald sent them to the recycling compound, thinking they were the androids. Leo fails to convince his parents and goes to rescue Adam, Bree and Chase himself, only to end up on the other side of the recycle compacter when his siblings have already escaped and his siblings trying to rescue him. After seeing what the Lab Rats did by risking their lives, he welcomed them to stay home and maintain normal lives while going on missions as long as they keep their Bionics a secret. 
==Season 3==
===Sink or Swim===
Leo and Donald finally find the ship that Adam Bree and Chase were on but have no sign of them being there. They met the captain of the ship, who tells them that the three Bionic kids that they were looking for had escaped on a helicopter, but with Donald piloting it, which supposedly makes Leo realize that Douglas must have gotten to his siblings first.
You Posted What!?!
The secret of Leo's siblings' is revealed when Krane posted a Video of the Lab Rats fixing a pipeline and using their Bionic Abilities. When the feds came to arrest Adam, Bree and Chase, Leo escaped the house with Douglas where they retreated to the school but Leo came up to the conclusion that the mission was a setup. His suspicions are confirmed when he and Douglas investigate the pipeline his siblings fixed and see that the girl who recorded them was Bionic, but Douglas and Leo thought that Krane used a cybercloak and mask to pose as the girl and post the video, knowing full well the Feds would arrest their family. However, Krane and S-1 confronted Leo, Douglas and Principal Perry. It left Leo severely injured when Taylor used Molecularkinesis to let a ceiling beam land on top of his arm, crushing it. Since the doctor couldn't heal Leo, Douglas took him to Krane's abandoned warehouse, where he used bionic technology to enhance Leo's broken arm. He was encouraged by his uncle to try his now healed arm out and Leo discovered he was Bionic after throwing a laser sphere for the first time. Douglas also tells Leo he has super strength in his arm and how the laser spheres work.  Soon, they are confronted by Krane and S-1 until Adam, Bree and Chase arrive looking for their brother. Leo helped apprehend Krane by knocking him out with his laser sphere generation ability, with Leo revealing his secret to his siblings and Donald. Subsequently, Tasha and Perry learned of his secret when Leo accidentally crushed Perry's hand when shaking her hand with his bionic one. Of course, Douglas left the room so Leo could explain it to Tasha before he fled the room. 
==Season 4==
===Bionic Rebellion===
During Sebastian's rebellion uprising, Leo was trapped in the training room with their bionic soldiers. However, Leo escaped with the help of Spin and Bob and joined his siblings in fighting against Sebastian, Lexi, and Tank after failing to get into the right room. He landed on top of Sebastian, unknowingly saving Chase. 
===The Vanishing===
Douglas makes Leo become Daniel's mentor so he had a better understanding of his bionics and, against Douglas' orders, Leo gives Daniel the upgrade like the other students. However, the students began disappearing, including Daniel because of Giselle hacking their upgraded bionic chips. Leo and his family went to rescue the kids but were lured into a trap by Giselle, who revealed that Marcus was alive. He subdued Leo, Adam, Bree, and Chase when they attempted to attack him and Giselle trapped the teenagers with the other bionic children and hoped to watch Donald and Douglas suffer as she tortured their children. However, Leo was immune to the effects of their cage because the bionics were only in his arm and leg. He used his bionic leg to break the cage, letting so the others escape while Giselle destroyed all their bionic chips. Leo went to take Marcus down but Daniel had already done so. After Giselle was defeated, the Lab Rats and their family returned home, when Leo learned his mother was expecting a baby girl. Leo was left alone in the lab to reminiscent and throw Marcus' remains on the floor. However, Marcus regenerated and as the two decided to battle each other, Douglas melted Marcus and saved Leo's life. Afterwards, the Lab Rats were disbanded, with Leo and Adam deciding to overlook the students' progress in the Bionic Academy whole Bree and Chase joined the new team being forged by Donald.
Category:Synopsis