For some reason, I got the idea of a Giant Rat who is the first rat to become a Sumotoran, and against the ideals of his ally, must fight alongside Hunter in an arena setting, but then the character ended up being an alternate version of Arte the Dragon Quest Fat Rat, and Oscar the Tuskateer is Oscar the Wallybat: half walrus, half wombat. This version of Arte is not a boxer, disk jockey OR a bouncer, but he is very strong and carries around a big suit of armor that doubles as a flailing weapon: his belly, of course. Like most rats, he's calm and easy going. However, he has an even harder time than most rats doing things, since he has no opposable thumbs and can no longer function as a quadruped, so his kind and caring butler Oscar is more neccessary than usual.