The biggest guy I ever saw at an anime convention was a goth. Fishnet shirt, raver pants, arm socks, eyeliner, painted fingernails, lipstick, jet-black hair down to his back, and he had to be around six-foot-five, approaching four hundred pounds of builtfat. In particular, I remember him having a massive chest/arms and a solid belly. Like an NFL lineman deeply in touch with the utter darkness of his soul.

All this to say that I am envisioning quite easily.

Somehow I imagine a version of Eddie Riggs from Brütal Legend.