Disguise Ability: Charisma. Requires Training: No. Use this skill to change your appearance. The effor requires at least a few props and some make up. A disguise can include an apparent change of height or weight of no more than one-tenth the original unless specially crafted prosthetics or costumes are utilized. Check: A character’s Disguise check result determines how good the disguise is. It is opposed by others’ Spot check results. The effectiveness of the character’s disguise depends in part on how much the character is attempting to change his or her appearance.