Archer's enemies are The Brotherhood(Dark Beast and Fatale), and Trevor Fitzroy. Archer turn his body into pure energy. Makes a pretty good soldier, too. Archer is from the same time as the X-Man Bishop and his sister Shard. Archer was a member of the X.S.E, but after his family was killed by rougue mutants, he joined the X.U.E.

When the X.U.E. discovered that Shard was in the present time, they traveled back in time to join her. They then inhabited three bodies from Fixx's "pixies". The X.U.E have now joined with the reamining members of X-Factor as well but are stayiong true to their original mission: "To ensure that their future never happens."

Fixx is a powerful Psionic. Her powers usually manifest as pixie-like forms of pure psionic energy. Fixx was unhappy working for the X.S.E. because she beleived that the they couldn't bring about change within their own time. As a true historian, she adhears to the ways of her past. She traveled back to join with Shard in her attempt to make sure that her future never happens. Since they have arrived, the X.U.E inhabited three recently deceased bodies by way of Fixx's "pixies". They have also met up with X-Factor and Havok. Fixx is the only person Archer trusts, as well as his only friend.

Greystone can increase his size and strength exponentially. However, the larger he becomes, the more grotesque his transformation. Greystone loves his time more thsn his present (the present and future for the rest). He dresses and talks like he's from this time, and hero-worships Havok. Greystone grew up on the streets as an orphan. Greystone is of Maori descent, inherent in the face paint he wears. Upon learning that Shard was in present time, the X.U.E came back to ensure that their future never happens.