>>38242011Breloom is a Kangaroo dude. Besides the fact that visually he is quite literally a Kangaroo made out of shrooms, he hops around like a Kangaroo in his in-game animations, and his entire gimmick is based around boxing like a you guessed it, a Kangaroo. Even the stretchy arm part comes from how Kangaroos hold their arms tucked in and then zip them out to box.