Tommy Knight: The Stolen Earth / Journey's End(as Thomas Knight); The Last Sontaran[SJA]; The Day of the Clown[SJA]; Secrets of the Stars[SJA]; The Mark of the Berserker[SJA]; The Temptation of Sarah Jane Smith[SJA]; Enemy of the Bane[SJA]; From Raxacoricofallapatorius with Love[SJA]; Prisoner of the Judoon[SJA]; The Mad Woman in the Attic[SJA]; The Wedding of Sarah Jane Smith[SJA]; Mona Lisa's Revenge[SJA]; The Gift[SJA]; The End of Time(as Thomas Kinght); The Nightmare Man[SJA]; The Vault of Secrets[SJA]; Death of the Doctor[SJA]; Sarah Jane's Alien Files: Episode 3[SJA]; Goodbye, Sarah Jane Smith[SJA]; Sarah Jane's Alien Files: Episode 6[SJA]; Sky[SJA]; The Man Who Never Was[SJA]; Farewell, Sarah Jane | as Luke: Invasion of the Bane[SJA]; Revenge of the Slitheen[SJA]; Eye of the Gorgon[SJA]; Warriors of Kudlak[SJA]; Whatever Happened to Sarah Jane?[SJA]; The Lost Boy[SJA]
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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.
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.