Bestia - jelly-bean, baby
and when he is not good he gets names in spanish lol the most common is muchacho cabron (is really not as bad as it sounds).
Guero - starving marvin, mr. poopy pants, sweetie...he has not been around too long yet, so not many nicknames. But for the most part I just call both of then "huny" or "sweetie", and my mother thinks I am crazy for it