I don't really like the tweedles idea. The devan thing sounds okay, but maybe it shouldn't look like devan (theres already a devan boss), it would look okay as one of the Medivio gargoyles than it could also be used as a Medivo Boss. It could be like you see a normal Medivo gargoyle sitting there, then suddenly it comes to life and the green gem apears on its head. Well I don't want to be telling you how your boss acts just thought I would add my idea!