Leafy is a potted plant owned by Boulder.
After Boulder unsuccessfully attempted to adopt a lion from the Griffin Rock Zoo as a pet, Cody Burns presented him with a potted plant to care for instead. Boulder immediately took the plant outside to play fetch.
Boulder replanted "Leafy" in the town park, however when the Power Planter was hit by lightning and went out of control, Leafy was among the plants it dug up. Boulder managed to save Leafy, and after the planter was defeated, used its claws to build a protective cage around the plant.