The Pirabbid Plant came into existence when Luigi and Spawny startled a sleeping Piranha Plant, which happened to have a Rabbid sleeping on top of it as well. Frightened by the creature, Spawny's powers activated, and he shot a laser beam from his eyes that fused the Rabbid and Piranha Plant together, creating the Pirabbid Plant, which subsequently fought Mario, Rabbid Peach, and Rabbid Luigi.
His main attack involves him shooting a fireball at the targeted character. It can inflict the Burn status if a direct hit is scored. Some challenges in Ancient Gardens involve combat against more than one Pirabbid Plant.