Malphas is an aggressive demon with a thirst for power. The 7 sins would best describe his personality with pride, lust, and wraith being the more prominant. He doesn't personally care to connect with others and prefers to just do what he wants. He is cold towards others and enjoys seeing pain. However, he tends to be more quiet and avoid emotional pain. It is unknown why as he keeps his life personal and doesn't have anyone close to him that would know other than his one and only friend Lucifer. Lucifer is a fellow demon so he tries not to disrespect him due to Lucifer's higher power.