Ratkin - One of the Freak Aspects, Reginald is a proud, honorable servant of The Rat Mother.
Insane - While he isn't a dangerous sort of insane (Usually), it's pretty much impossible to tell the difference between his fantasies and reality when he talks.
Liar - Oh, right. He's also a liar.
Adventurer - He is always on the look out for insane, gallant adventures!
Storytelling - He adores a chance to spin a nice tale.