Dylan Lethbridge-Stewart
Dylan Lethbridge-Stewart was a nephew of Alistair Gordon Lethbridge-Stewart.
Dylan, the son of an alternative-reality version of James Lethbridge-Stewart, was brought to the Brigadier's Earth in 1959, when he was only ten. James kept Dylan closed off from society, in an attempt to keep him safe. Dylan adopted the name "Simon Gore."
In 1969, his father gave Dylan his first mission: to befriend Owain Vine, and wait until the Great Intelligence manifested in him before bringing him back to the Vault. (PROSE: Night of the Intelligence) Dylan first met Owain in New York, where the Great Intelligence once again returned. (PROSE: Times Squared)
In 1970, Dylan was sent to meet Owain in Japan. After the Great Intelligence began to manifest, Dylan had him taken to Level 4 of the Vault, where his father planned to tap into the dimension where the Intelligence resided.
Later, the Brigadier finally embraced Dylan. (PROSE: Night of the Intelligence)