Eden was selected as one of the many unregistered superhumans, hand picked by Nick Fury as part of his Secret Warriors and under the tutelage of Gateway. Initially, Fury attempted to recruit him to another unknown team, but Gateway refused.
After joining the team Eden went on several successful missions with them. On a particular mission where his powers were key in the team's escape he was badly injured. The team barely made it out alive, and Eden was left in a coma. He worked with the Secret Warriors after that.
He has been described as a "universal shaper", meaning he can bend reality, folding and twisting space-time, molding reality and tearing open what exists between one place and another, making him a "souped-up teleporter."
Manifold can not use his powers outside of his native Universe. Black Swan stated that every Manifold is useless outside his own reality, before terminating her reality one, intending there that Manifolds haven't powers in an other dimension.[1]
However, he needs to have some data about the place he is to use his powers.