Christopher "Chris" Taylor, also known as ChrisT (because there were about a dozen different people named Chris in Fallout), was the lead designer of Fallout and a producer of Fallout Tactics. He was the lead systems designer of Project V13 (the canceled Fallout Online). With Tim Cain, he created the famous SPECIAL character system and much of the Fallout world.
After Fallout, he stayed at Interplay for a while, serving as producer on Fallout Tactics as well as designer of Star Trek; Starfleet Command, until he left to join Vivendi Universal Games, where he worked as a producer of Lord of the Rings Online.
He is often confused with Chris Taylor from Gas Powered Games, the creator of Dungeon Siege and Supreme Commander, and formerly of Cavedog Studios, the creator of Total Annihilation.