Rios is one of the youngest members of the pack being barely a year old and, because he's so young, he tends to be the most immature as well. He's a very simple minded Toko that adores playing pranks on his packmates, especially the higher ranking and older Tokos. His pranks usually involve boobytrapped-holes in the ground that, when stepped on, cave in and cause whoever is getting pranked to have one of their legs go into the hole and them to tip over. Everyone has grown to know this pup for his pranks and his famous nickname, Cheeky-Bugger, spawned because of his constant pranks.