I have a group of four that parallel the Midnight Crew called the Tarot Killers. They're Red Carapaceans whose origins are, at the moment, unknown (I mean, I know, but the fanfic I'm writing doesn't yet). For reasons that even I haven't fully decided yet, they also bear a resemblance to the Beta Kids' Guardians. They are named Sword Sovereign (Bro), Cups Consort (Mom), Coins Gentleman (Dad), and Wand Squire (Grandpa). They're harassing my human OCs right now in a variety of ways, like Coins Gentleman killing one character's intended Exile and giving her bad commands, or Wand Squire sniping at another character from a zeppelin.