Sabretooth

Sabretooth was first seen on a news broadcast, when he was fighting off against the police. Later he met up with Wolverine and Cyclops during Beast's trial, as a coy for Magneto. Sabretooth was taken into custody at Xavier's much against Wolverine's wishes, who refused to share the why's with his teammates. When the X-Men were gone fighting Magneto, Sabretooth was left alone with Jubilee and almost killed her. Wolverine returned just in time to prevent it, though Creed badly injured him in battle. He escaped before the X-Men could defeat him. Sabretooth faced Wolverine several times afterwards, before his past with Weapon X, Silver Fox, Maverick and his bad childhood was discovered. He formed an allegiance with Apocalypse when he was again taken prisoner by the X-Men, and escaped again afterward.