About: Shokushu demons going good isn't unusual in the Haremverse, but Klaymore is a special case. He has no remorse or shame for his culture, but when his son was cast out for trying to make a change, Klaymore did not hesitate to support him and even followed him into exile. Be warned, this daddy is a scoundrel, and you shouldn’t sign anything he offers, but one thing you can trust: he likes it rough.
Klaymore's appearance isn't based on Marduk's monstrous form but on a more humanoid ones, like his body when posing as Lucifer. His hairstyle is likely derived on his Satan persona. He has red skin like the devil, too. Like Marduk who is fully evil, similarly Klaymore is proud of his demon life, the main difference between them is on how they treat their children, Marduk always in conflict with Daimon while Klaymore is supportive of Dorian.