mermit crab

MerMantis Shrimp. Even his most genuine displays of affection are incredibly violent. 

Note: I’m pretty sure real mantis shrimps are incapable of friendships with other crustaceans (and were this an encounter in the wild, it would surely be more of a dinner-for-one type arrangement), but this is the world of Merpeople and I’d like to believe that Mermantis Shrimp’s partial humanity has made him a bit more open minded.