Muk

"Yes, I know. It's Kum."

Neutral | Relaxed | Low-tension 

Always in a very neutral state, it's very hard to make him sad or angry. 

Which means it's also difficult to make him flustered, he will destroy all your dirty jokes.

ok but look at him
i know nobody will see this description but sometimes when he is bored, he will slink on the floor and pretend to be a rug.