FusionDex

It has a commensal relationship with the large sprout it wields; the sprout turns sunlight into nutrients that are absorbed by it. There is some debate if the relationship is symbiotic, since this Pokémon makes sure to protect the sprout from harm.

A Sunwak is the evolved form of a Cubone that has grown tough by overcoming the grief of losing its mother. Sunwak try to minimize movement to conserve the nutrients they have stored in their bodies for evolution.