The Bully Snail is a snail that has a grayish-black shell with silver spikes on it. He has a pale purple body with a darker pink underside. He has dark olive-yellow eyes. He has a thin white swirl and a bandage on his shell.
When Gary sees Mable-Monica and her pet snail Mary on the boatmobile and decides to slither after it on the street, the Bully Snail grabs him by the tail. Gary is surrounded by the Bully Snail and Dan the Orange Snail. His spikes get stuck in the fence when he tries to get out through a gate hole.
(Struggles to get through the gate hole but the spikes on top of his shell is getting in the way) "Hey, how come we never go to the front, guys?"