Upper-level demons rank higher in the Demonic Hierarchy and can rise in power by destroying good and promoting evil. Specifically, the members of the Ordo Malorum are referred to as generals of the demonic legions. Demons can achieve an upper-level rank by collecting more powers. The demon Zahn achieved this by collecting powers through soul trading. According to Cole Turner, upper-level demons have a human form and bleed red, while some lower-level demons bleed green.