Echiboo is a pet. He shall squeak from time to time, but never talks. The spots on the little rascal's head are slightly reminiscent of those found on the character of Ebichu, but have other unique patterns elsewhere on its body. Whenever not in his cage, Echiboo loves exploring his new surroundings in his uber-cute hamster ball. However, Echiboo is a troublemaker to the core and can't help but eating holes in the girl's tennis shorts and dragging out panties whenever he gets on the loose.