Cross is a skeleton, he is one of the protectors of the King Nightmare Sans, Nightmare Sans is the king of the Moon or Negativity kingdom. He is cold, quiet, introverted, he secretly has a deep sadness from loosing his brother. No one knows his past, and he won't tell anyone. He wears a necklace that was given from his old friend Chara, he doesn't talk about them...his weapons are knives he can spawn or a giant knife he carries on himself. He loves chocolates, A LOT.