Timebroker
The Timebroker is a fictional character created by Judd Winick for the comic book Exiles; a psychic construct created by a race of alien bug-people who accidentally damaged a large number of alternate universes.
The Timebroker first appeared in Exiles #1, when he invited the Age of Apocalypse version of Blink to join a group of dimension-lost superheroes whom he named "The Exiles", whose mission would be to repair the damaged realities, and hopefully, to return home safely. A team member whose home reality is repaired is immediately sent home, and replaced with someone new.
To repair each damaged reality, the Exiles must complete a mission given to them by the Timebroker through a communications device called, "The Tallus," worn by the leader of the group, be it Blink, Mimic, or Sabretooth. These missions are usually humanitarian or super-heroic in nature, but sometimes involve assassination.
The Timebroker also created a separate team of lost heroes, called Weapon X, whose job is mainly wetwork. When they grew out of control, the Timebroker ordered the Exiles and Weapon X to battle each other until only 6 remained alive.
Recently, the Exiles received a warning: "Beware the Timebreakers." Almost immediately after, the Timebroker acted irrational, giving orders to murder the Age of Apocalypse X-Men as well as the Exiles' Mimic. He also did not pop in when Tanaraq and Holocaust attempted to rebel and get their old lives back. The Exiles learned later the true nature of the Timebroker during a raid on Panoptichron, namely that "he" is an illusion created by bug-men. Mimic used him to convince Blink and the others to cast the infiltrating Hyperion back to his original Earth during a raid on Panoptichron. Heather Hudson most recently used the Tallus in #78 to tell the Exiles and Squadron Supreme about each other to save the Exiles from life in prison.