A small, French mouse previously fighting against the Tiger General and his soldiers during a war in Happy Tree. His allies are Flippy the bear and Sneaky the chameleon. Mouse Kaboom carries a big backpack full of explosives, which he used in battle. Nowadays, Mouse Kaboom resides in Happy Tree, and is partially retired, although he's happy to jump up to protect Happy Tree from any outside threats. He likes destruction so he'll be happy to blow some enemy stuff up. He still loves explosives.