Maru reminds me a lot of Denji tbh. He goes on the smash list.

H-huh???

Wait...you're on to something..

The eyes, the MOUTH, the pointy tooth? the way he sticks his tongue out? the concept being similar to the demon concept in chainsaw, and their vibe overall. not to mention that seen of him drinking. I thought it was denji for a sec but with black hair. I'm going CRAZYYYYYYY