Pokemon - Cubone Pop! Vinyl

Pokedex Entry #104:

Cubone, a Ground-type Pokémon. Cubone has earned its classification as the Lonely Pokémon from its usual attitude of caring only for itself. It wears its mother's skull on its head, so no one knows what its bare face looks like. However, it's clear that it's always crying. Its cries echo inside the skull and come out as a sad melody. According to some, it will evolve when it comes to terms with the pain of her death.