Brown Guy is from Sumotori Dreams, with noticably similar traits to the other guys. Unlike the other guys, however, he has excellent fighting skills, and is typically a victor in matches. He considers Green Guy (Sumotori Dreams) to be his arch-rival, and often targets him brutally.

Although Brown Guy is an excellent fighter, he is rather stupid, having terrible balance and an awful sense of direction. On occasion, he has been defeated by all the other guys in the arena, as they seem to share a dislike of him in general (excluding Jack in some occasions).

Oddly Grey Guy and Brown Guy appear to share a mutual interest in each other, occasionally teaming up to defeat Green Guy or Blue Guy.