In S04E11: Beyond Good and Evil Part 4 of X-Men: The Animated Series, there was a guy who said that he built the time axis. What is his name? I couldn't find any info about him.
He's Bender, a guardian of time, though
at the end of the episode he's revealed to be Immortus, a time-manipulating villain.
(warning: other spoilers ahead, but I don't think this answer should be an all-hidden one.)
Long story short, Kang the Conqueror is a guy from the 30th century who came across a time-travelling technology. He went back in time to the pharaohs, presented himself as one and tried to make friends with En Sabah Nur (aka Apocalypse, aka most OP'ed mutant ever. Of all time). Now for the fun part: depending on which comic you're reading, Immortus is either Kang himself or an alternate version of him (as comics go...).
Powers: technically speaking, he doesn't have powers, but he's both a physics and strategy genius. Also, he's got a lot of future technology available, granting him what I call "superhuman starter pack": superhuman strength, increased defense, energy blasts, and some other nice things.