Came up with an OC Masters of the Universe character.
The idea behind him is he's not necessarily helping the Great Rebellion for the best of reasons but can still be relied upon thanks to his sense of professional pride.
Think Garret from Thief Deadly Shadows. Often snaking at the heroes expense , thanks to a life of sneaking across almost ever hidden secret in his line of work.
Giving him a less then stellar opinion of the "good" people, their trying to free.