Luke Smith ( Activated 2008 ) An artificial human , the Archetype was the creation of the Bane . He had the physical form of a teenager upon his creation , despite his actual age being much younger . On the day of his " birth " he met Maria Jackson , from whom he also began to learn how to speak . He helped defeat the invasion plan of his creators . He was named " Luke Smith " after being adopted by Sarah Jane Smith . Luke was initially very naive , not even knowing how to lie . However , he more than made up for this with an excellent memory that helped his mother during their adventures . As one of her " companions " , Luke helped his mother save Ealing and the world on numerous occasions before heading to college early . At college , Luke quickly learned more pop culture and adapted fast . He even learned that his mother had adopted another alien - made child , who became his little sister Sky Smith . Biography . Creation . The Bane ' s invasion of Earth depended on getting as many people as possible under their control . Their strategy was to use a Bane secretion as an ingredient in the drink Bubble Shock ! , but approximately 2 % of the human population was immune to the effect . In order to get the last remaining 2 % to accept Bubble Shock ! ' s " special ingredient " , they created the Archetype from thousands of samples of various entrants to the Bubble Shock ! tour , including Maria Jackson and Kelsey Hooper . However , when Kelsey inadvertently set off an alarm by using her mobile phone , the ensuing events caused the Archetype to awaken and escape . He joined Maria and Sarah Jane , instantly befriending them . Later , he effortlessly memorised the signal to " call " the Bane with the Star Poet ' s phone , which destroyed the Bane Mother along with the Bubble Shock ! factory . ( TV : " Invasion of the Bane " ) Adoption . When the Archetype met Maria ' s mother Chrissie Jackson , Sarah Jane Smith told her that he was her adopted son . After Sarah Jane considered several names , including " Alistair " ( after the Brigadier ) and " Harry " ( after Harry Sullivan ) , she ultimately settled on " Luke " , saying that it was the name she would have called her son , if she had one . Sarah Jane had Mr Smith create adoption papers for Luke and took him in as her son . ( TV : " Invasion of the Bane " ) Adventures with Clyde and Maria . Over the next few months Luke slowly learned about the world around him , and successfully aided Sarah Jane , Maria and Clyde Langer in combating alien threats on several occasions . He demonstrated exceptional intelligence and an eidetic memory along with almost complete naiveté about human nature which , while being a great asset to the team , was also a problem , as when he inadvertently aided the Slitheen in their plan to harvest the energy of the Sun . ( TV : " Revenge of the Slitheen " ) He was given an ancient talisman by Bea Nelson - Stanley and told to keep it a secret , but was exposed by Mr Smith . Knowing the importance of secrets , he expressed guilt at not keeping his , but was ultimately pleased with the outcome as the talisman was actually a key to a portal that allowed evil Gorgon s to enter the world ; his exposure also led to their defeat . ( TV : " Eye of the Gorgon " ) When he was captured by the Uvodni General Uvlavad Kudlak along with Clyde , and several other teenagers from around England , he successfully escaped from imprisonment on the alien ship and ultimately exposed a plot by the Mistress , thereby freeing the captives . He earned his first kiss from one of the captives , Jen , which bewildered and confused him . ( TV : " Warriors of Kudlak " ) Luke was worried about Maria when she got injected with gold and was controlled by the Keratin . He helped to defeat the Keratin and Maria got free of the Keratin ' s control . ( AUDIO : " The Glittering Storm " ) The alien Ravage possessed Luke ' s mind . He believed that Luke ' s young and impressionable mind would make it easier for him to completely take over and destroy Luke ' s personality and take over his body . Luke fought a mental battle against Ravage and defeated him . ( AUDIO : " The Thirteenth Stone " ) Mysterious TV reports were later seen by the team implying that Luke was actually Ashley , the child of Jay and Heidi Stafford , who has been missing for three months . While Mr . Smith initially confirmed that he was a genetic match with the missing boy and he was returned to his supposed parents , Mr . Smith was actually working with the parents , who were Slitheen , to capture Luke . They tried to use the MITRE headset from the Pharos Institute to amplify his latent telekinetic powers to make the Moon crash into the Earth . ( TV : " The Lost Boy " ) Luke was later introduced to Jack Harkness , Martha Jones , Donna Noble , Harriet Jones , Gwen Cooper and Ianto Jones via subwave network when the Dalek s transported Earth into the Medusa Cascade . He aided their efforts to contact the Tenth Doctor with the idea of using Mr Smith to link telephone exchanges and boost the signal . He then " met " the Doctor via the subwave communications network . ( TV : " The Stolen Earth " ) After the Daleks had been defeated and their planet - moving Magnetron was destroyed , the Doctor contacted Luke , Mr Smith and K9 Mark IV to use the Cardiff Rift as a tow rope for the TARDIS so it could return Earth to its original location in space . ( TV : " Journey ' s End " ) Luke saw off the Sontaran Kaagh ( the last survivor of the Sontaran invasion of Earth ) who wanted to destroy the Earth by dropping satellites . Maria ' s father had a job offer to move to Washington DC and she decided to let him take it . Six weeks later , she moved out . ( TV : " The Last Sontaran " ) For Luke it was really hard to see Maria leaving Ealing . Maria was special to Luke and understood him in a way that not many people would understand . She was also the first person he ever spoke to . He missed her badly . Sarah Jane and Clyde did their best to comfort him . ( PROSE : " Day of the Clown " ) Maria and Luke still kept in touch using e - mail ( TV : " The Day of the Clown " ) and via alien technology . ( TV : " The Mark of the Berserker " ) They also phoned each other at least once a week . ( PROSE : " The Nightmare Man " ) Adventures with Rani and Clyde . Rani Chandra , a teenage aspiring journalist , moved into Maria ' s old address ( 36 Bannerman Road ) and joined Sarah Jane , Luke and Clyde in defeating the Pied Piper . Sarah Jane ordered Luke to look after Rani so she wouldn ' t find out about what they did . Luke failed and Rani joined the team permanently . ( TV : " The Day of the Clown " ) Luke ' s lack of a birthday proved invaluable in defeating Martin Trueman , who used the powers of the Ancient Lights to control people by their star signs . Sarah Jane suggested that they make the anniversary Luke ' s default birthday . ( TV : " Secrets of the Stars " ) Together , the team defeated several more aliens . They defeated the Berserker ( TV : " The Mark of the Berserker " ) and the Trickster when he attempted to manifest corporeally in Foxgrove in 1951 ( TV : " The Temptation of Sarah Jane Smith " ) . Luke Smith loved shopping and bought things from the supermarket for his neighbour Mr Ploughman . Mr Ploughman was later possessed by the alien Janksia . Luke was doing his work experience at Natural History Museum when he found the black diamond of Earnfield . The diamond was an artefact of Janksia ' s ship and influenced the finder , Luke , to protect it from other people . Luke locked himself up in a cupboard with the diamond . He refused to come out . The museum ' s employee Dr Wendeline Minot called Sarah Jane who soon released that the diamond was alien . Luke brought the diamond to Janksia who fell into a garbage compactor which crushed him to death . Luke was released of the diamond ' s control . Because the diamond was alien , Sarah Jane Smith told Mr Smith to make a replica of it and gave the duplicate to the museum . She also gave another alien artefact to the museum . In exchange , the staff would not tell anyone that Luke had taken the black diamond . ( AUDIO : " The Time Capsule " ) When Victorian house of the Burden family swapped places with the O ' Brain ' s house from 2009 Luke helped to place the house into correct time again . ( AUDIO : " The Ghost House " ) Later , Luke began having dreams of Mrs Wormwood , who returned claiming herself to be Luke ' s " real mother " . Luke extended some sympathy towards her , but it later transpired that she returned to Earth alongside the Sontaran Kaagh in an attempt to summon Horath , the immortal tyrant of the Dark Empire . With help from Brigadier Lethbridge - Stewart , and due to infighting between Kaagh and Mrs Wormwood , they were able to stop this potential apocalypse ( TV : " Enemy of the Bane " ) Luke helped defeat Androvax and stop him from destroying Earth with Nanoform s . ( TV : " Prisoner of the Judoon " ) On a classtrip to Snowdonia a shadowy figure imitated Luke ' s , Rani ' s and Sarah Jane ' s appearance . It looked exactly like Luke and was one of the Shadow People . When Luke and the others left he waved goodbye to the shadowy figure , who had taken the appearance of his mother . ( AUDIO : " The Shadow People " ) Luke helped to find out the mystery about the lost memories of people who lived in Wolfenden . The people ' s memories did not come back , but thanks to Rani , Sarah Jane , Luke and Clyde the people of Wolfenden knew that the alien Mrs Hendrick had stolen their memories . ( AUDIO : " The White Wolf " ) He handed his mother away at her wedding with Peter Dalton but it was a trap by the Trickster . He was teleported , along with Clyde , Rani and the Tenth Doctor , who crashed the wedding , to Limbo in a time trap . Thanks to the TARDIS ' artron energy and Clyde manipulating it , as well as Peter withdrawing the Trickster ' s agreement , they were able to escape , defeating the Trickster . Luke got a look inside the TARDIS when the Doctor came to Bannerman Road . ( TV : " The Wedding of Sarah Jane Smith " ) Luke defeated Mona Lisa . ( TV : " Mona Lisa ' s Revenge " ) During one mission with Sarah Jane and the gang in tracking down a Slitheen , he encounters a different family from the same planet - the Blathereen . The group befriended them and accepted a gift , some Rakweed . However , Luke fell ill for the first time when he inhaled some of the released spores , and his life hung in the balance while Sarah Jane tried to find a cure . He pulled through at the last moment when Mr Smith destroyed the Rakweed and its spores . ( TV : " The Gift " ) During the second attempt of members of the Slitheen - Blathereen family to cover the Earth with Rakweed Luke was infected by the spores again . The Rakweed was later destroyed by Clyde and Luke felt good again . ( GAME : Sound ) Luke and Sarah Jane were informed by Mr Smith that a space ship crashed on Earth . The went to crash site of the ship , saved the pilot of the ship and brought him to Sarah Jane ' s attic . Soon after this the Krulius appeared and teleported himself , Sarah Jane and the pilot to his space station . Sarah Jane defeated the Krulius and returned to Luke . ( COMIC : " Monster Hunt " ) After this Rani was teleported to the Krulius space ship . She escaped returned to the attic and told Luke , Sarah Jane and Clyde about her experiences . ( COMIC : " Return of the Krulius " ) When a story about Hank Carter and the Wraith Warriors was written a journal with Sionic Paper and these figures began to appear in the real world . Luke helped Rani Chandra and Gregory P . Wilkinson to defeat Hank Carter and the Wraith Warriors . ( AUDIO : " Wraith World " ) Luke then helped to defeat the Umorgus . ( AUDIO : " Deadly Download " ) . Following all of humanity being turned into the Master Race , Luke told Clyde that Sarah Jane had Mr Smith create a cover story to explain why everyone had a different face , an alleged hallucination brought about by Wi - Fi encountering severe technical difficulties . As he crossed the road , he was almost run over by a car when the Tenth Doctor , who was slowly dying at the time and preparing for his regeneration , pushed him aside at the last moment . Luke recognised him and quickly ran to tell Sarah Jane . The two watched as the Doctor entered the TARDIS and waved goodbye . ( TV : " The End of Time " ) Time at Oxford . Having completed his A levels the previous school year , Luke learned that he had been accepted by the University of Oxford . Although pleased , Luke began to feel apprehensive , as it would mean being away from his friends and his mother . He began suffering from nightmares ( something he did not believe was possible ) and was soon faced with the Nightmare Man , a creature from another dimension who was using Luke ' s powerful mind to break into his dimension . The Nightmare Man was successful , and placed Luke in a sleep he could not awake from . Determined to plunge the whole world into endless nightmares , he started with Clyde and Rani . However , Luke was able to contact his friends in the nightmare world , and together they managed to defeat him by overcoming their fears , making him powerless . The next day , Luke bade farewell to his friends and departed for University , driving an old car of Sarah Jane ' s she had given him , named Ethel , with K9 in tow . ( TV : " The Nightmare Man " ) He would later contact his mother and friends via webcam . The students he befriended at Oxford lived on baked beans and curry . ( TV : " The Vault of Secrets " ) He returned home at least once to do some laundry ; K9 remained in Oxford , which he quite enjoyed . Luke also visited Mr Smith and updated the Alien Files on the Sontarans , Mrs Wormwood , and the Bane . Luke commented on the lack of alien activity in Oxford . ( TV : " Sarah Jane ' s Alien Files episode 3 " ) Luke returned to Bannerman Road after receiving a message from Clyde , telling him of Sarah Jane leaving . With the help of K9 ( who had remained at Oxford and communicated via webcam ) , they discovered that Ruby was a Qetesh . While Rani distracted Ruby , K9 used her mobile to reprogram her computer , Mr White . After finding Sarah Jane , Luke used Mr White to project holograms of meteors , causing enough excitement in the human population to overload the emotion - devouring Qetesh . ( TV : " Goodbye , Sarah Jane Smith " ) A growing family . After returning to Oxford , Luke eventually received a new adoptive sister in Sky Smith . ( TV : " Sky " ) Luke fell victim to the curse put onto Clyde after his friend phoned him , to which he refused to answer . This suggested that , genetic enhancements aside , he was fundamentally more human than Sky . The curse was later reversed by Clyde who defeated Hetocumtek . ( TV : " The Curse of Clyde Langer " ) Luke returned to Bannerman Road in 2011 and met his sister in person ; while initially jealous of her , because she had taken his room , he became more attached to her as they worked together to investigate the current crisis , Sky realising how they could be saved by getting a message to Mr Smith using Morse code . Then , once they had been saved and the adventure was over , he asked Clyde to draw a picture of Sky , with the words ' Sky ' s Room ' written on it and embraced her after sticking it up on the wall . ( TV : " The Man Who Never Was " ) Later life . At some point in his life , Luke graduated from University with distinction . ( TV : " The Mad Woman in the Attic " ) Sarah Jane and her gang continued to have adventures , defend Earth and save countless lives . Statues would be raised in their honour and they would leave behind a legacy that would last forever . ( PROSE : " The Wedding of Sarah Jane Smith " , TV : " The Man Who Never Was " ) In 2059 , Luke and Rani visited Maria Jackson in Washington DC . ( TV : " The Mad Woman in the Attic " ) Alternate realities . Donna ' s World . In a parallel world , Luke investigated the Royal Hope Hospital with Sarah Jane , Maria and Clyde . As the hospital was moved to the Moon , the oxygen ran out and caused everyone in the hospital , including Luke , to die of asphyxiation . ( TV : " Turn Left " ) Andrea Yates ' World . In a world in which Andrea Yates survived and Sarah Jane died in her place on 13 July 1964 , the Trickster had redirected the Bane away from Earth , causing Luke to have never been created . ( TV : " Whatever Happened to Sarah Jane ? " ) Personality . Even in his first hours of life , Luke knew how to speak , but he knew nothing of the world . He tended to respond to anything happening around him with a naïve response , such as , " Is that good or bad ? " . Kelsey Hooper had a crush on him but he seemed entirely oblivious to this development . ( TV : " Invasion of the Bane " ) He seemed to have feelings for Maria ; he was the saddest when she left and was still depressed even after Rani joined the gang . When Clyde questioned this , Luke denied such feelings . ( TV : " The Day of the Clown " ) He quickly built a strong friendship with Clyde , who , being far more socially adept than Luke , taught him the ' proper ' way to be a teenager . However , Luke ' s logical , analytical personality meant he was too literal ; he could not tell good jokes because he was lousy at using metaphors , and he had a terrible sense of balance which made him bad at skateboarding . ( TV : " The Lost Boy " ) As he spent more time with his new family , he gradually became accustomed to morals and gained a strong sense of right and wrong . ( TV : " Prisoner of the Judoon " ) He did not like football . ( TV : " The Lost Boy " ) Powers and abilities . As the composite of thousands of humans , Luke had genius - level intelligence , eidetic memory and enhanced learning ability . ( TV : " Invasion of the Bane " ) Sarah Jane told Lucy Skinner that Luke could see the flaw in Einstein ' s theory of relativity . ( TV : " The Last Sontaran " ) Though he could not utilise telekinesis normally , he had , in theory , the latent telekinetic powers of thousands ( TV : " The Lost Boy " ) . Anticipating her re - emergence , Luke began to experience precognitive dreams about Mrs Wormwood , though Luke otherwise never dreamed outside of interference from the Nightmare Man . ( TV : " Enemy of the Bane " , " The Nightmare Man " ) There were also physical aspects to Luke ' s genetic perfection ; Sarah Jane commented that his immune system was so powerful he had never gotten sick , prior to his attack by Rakweed spores . ( TV : " The Gift " ) . His teeth never decayed , and he never needed to visit the dentist . ( AUDIO : " The White Wolf " ) Luke demonstrated excellent combat skill and reflexes in the game Combat 3000 and was selected to be a warrior for the Uvodni in the Ghost Wars . ( TV : " Warriors of Kudlak " ) Luke spoke French perfectly . ( PROSE : " The Last Sontaran " )