Astaroth

A male former Angel with blond hair and gold eyes who sometimes uses fake angel wings to impress women. He chose to fall from Heaven shortly after Beelzebub did due to his crush on her and often tries to communicate his feelings, though his methods make him come across as a stalker. He was surprised that Beelzebub seemed to like Mullin more than himself as he considers Mullin boring and unimpressive. He likes to refer to himself as Beelzebub's older brother, though they are not related.

(Source: Wikipedia)