Pages stolen from Madam Charmaine's spell books. Collect all in a level to make a Power Skull appear. Skull pages usually appear in a jumping pattern so a lot of above air action will be required. Some skull pages require a suicide jump in order to get them (e.g. the last skull pages in the near end of the upper city is a more than a fifty metre drop.) and some require the swing pin or some time taken to get.