FusionDex

Wild Belwak often prey upon Beldums and uses the large claw-like parts of their bodies as weapons. They have begun to develop a weak magnetic field at this stage in their lives, which causes metal to fuse with their bodies over time.

A Belwak is the evolved form of a Cubone that has grown tough by overcoming the grief of losing its mother. When Belwak gather in a swarm, they move in perfect unison as if they were but one Pokémon.