Red Skull
The Red Skull eventually mounts an assault on the Avengers, using previously-planted commands to take control of the team, but Deadpool is able to resist him long enough to place Magneto's old helmet on Rogue's head, rendering Rogue immune to telepathy long enough to knock the Red Skull out and take him to be operated on by the Beast. The fragment of Professor X's brain is extracted from the Red Skull, but although Rogers attempts to take custody of the fragment for his own ends, Rogue and Johnny Storm fly up and incinerate the brain fragment, leaving the Red Skull to be taken into 'custody' by Rogers. Although he is rescued by Sin, Sin and Crossbones subsequently betray the Red Skull to prove loyalty to Rogers, who kills the clone for good by pushing him over the cliff outside the Red Skull's mansion with Rogers revealing never being loyal to the Red Skull from the beginning.