The Exiles then return to Earth-616 to take Beak home. Unfortunately, Earth-616 is dominated by the House of M. During their stay, the Exiles run afoul of the body-hopping serial killer Proteus, who steals data from the Panoptichron and escapes from Earth-616, leaving Beak depowered back home. The Exiles chase Proteus through several realities, including an alternate version of the New Universe, an alternate version of 2099, Squadron Supreme, Future Imperfect, and "Heroes Reborn", before finally bringing Proteus down by trapping him in Morph’s body, which does not decay, unlike all of Proteus’ other host bodies. During the "World Tour" of hunting down Proteus, Mimic is possessed by Proteus and dies, forcing the Exiles to pick up new members Longshot, Spider-Man 2099, and Power Princess to restore their diminished numbers.