I made an Alolan Marowak character:

Height: 2'6" / 76cm
Weight: 60lb / 27kg
Relative Age: elderly
Gender: non-binary
Pronouns: they/them
Orientation: asexual

Bones knows a diverse array of primitive sorcery and necromancy techniques. In addition to wielding fire and curses, they can create basic illusions, such as making themselves appear larger to intimidate powerful enemies.

Like other members of their species, the spirit fire they wield causes lasting physical and mental pain, and it cannot be extinguished by water. They can also use this fire to cleanse ailments, animate objects, and raise the dead. It is said that Bones can even reverse an untimely death, though they heavily discourage such rumors, and refuse to attempt it.

Bones uses a number of techniques to extract information from the bones of deceased Pokémon. By applying their spirit fire to a bone or bone fragment, they can even briefly commune with that Pokémon's spirit. However, they never touch the bones and bodies of deceased Marowak or Cubone, and will recoil from them with apparent horror.

No one knows exactly how Bones got their unique head marking, except that it appeared after they visited the Galar region for the first time.