[@Omega Man]

Ooh, I like the Rogue/Ravager idea! I think I'll develop that! Given the meanings of both 'rogue' and 'ravager', and the fact she temporarily steals powers, I'm thinking 'Marauder'

Edit: Besides Terminator, what would the supporting Amalgms in this backstory be? An Amalgam with Mystique? Should she have initially been a villain to Titan X?