Deformities and Deformity Feats offer players the chance to customize their character by imposing physical limitations and physical oddities. In a world where dragons and demons can breed true with other species, deformities are as likely to result from magical curses, divine wrath and mad experiments as they are to result from hereditary illnesses, generations of incest, and exposure to toxins during pregnancy. This PDF is an easy-to-integrate items and just the sort of thing needed for DMs to add depth to any great d20 fantasy campaign world and gaming session.