Mamejirou
Mamejirou is a demon with multicolored hair and a tail. He is a member of the Blood Lad family and is one of the strongest demons in the series. He is also a very loyal and protective friend to Staz. Mamejirou's backstory is a tragic one. He was once a human who was turned into a demon by Staz's father, Blood Lad. Mamejirou was originally a very kind and gentle person, but after being turned into a demon, he became more violent and aggressive. He also developed a strong hatred for humans, which he eventually overcame. Mamejirou is a complex and well-developed character who has a lot to offer the story. He is a valuable asset to the Blood Lad family and is a true friend to Staz.