Skeleton is a common enemy from the series. They first appear to be skulls lying upon the ground. When an enemy approaches, they pull their entire body from the ground and attack by jumping around. They can jump deceivingly high.
Skeletons also appear as enemies in Ultimate Ghosts 'n Goblins, and the dark magic from Magicians or other sources can transform Arthur into a skeleton. Many of his abilities are reduced while as a skeleton, and he dismantles every time he jumps. Also, unlike other transformations, Arthur will die instantly if damaged in this form, regardless of the armor he was using before the change. Arthur also becomes a skeleton with his DLC costume in Ultimate Marvel vs. Capcom 3.
Ghosts 'n Goblins: Gold Knights has a game mode where the player controls a skeleton that attacks by throwing bones in an arc (like the axe). As the skeleton is not wearing armor, any hit is lethal, making the game harder.
Skeleton in Ultimate Marvel vs. Capcom 3