Tony the Tinker was a technologically gifted inhabitant of Nipton.
Despite his skill, the rest of the town considered him a freak of some kind, though it's not explained in what way. In his diary, Tony mentions impressing an out-of-town girl with a robot so that she stays with him before the rest of the town can turn her against him. He also mentions that in case he succeeds, it'd be a nice change from having to pay Rose for sex. Tony's ultimate fate following the massacre of Nipton is unknown.
Tony the Tinker is mentioned only in Fallout: New Vegas.