He is resin.

Kuma's Corner is a restaurant that serves huge, dripping, mind-bendingly delicious burgers in the Avondale neighborhood of Chicago. When you walk into the establishment and sit down to eat, you are treated to aural cacophony of loud, thrashing heavy metal music. Their burgers have names like the Black Sabbath, the Iron Maiden, the Lair of the Minotaur and (my personal favorite) the Plague Bringer. They somehow managed to snag a location at 666 W. Diversey Parkway for their sister restaurant and made certain to proudly feature its address number.

Sources: Kuma's Corner | h/t redditor mbdave