Titan- Solar. It would have to be punching things in the face. Similar to Brick from borderlands. Warlock - Arc. Give the class some chain lightning. Short range, but great on clustered mobs. I know, it sounds like sith lightning, but Star Wars FTW right? Hunter - Void, a decoy, they can leave it behind to confuse enemies. Upgraded it could leave two decoys, and exploding decoy, etc.