Ryo Asuka has bangs and sideburns.
Little is known about the real Ryo. He was born during the 1960's, with his mother dying at some point in his childhood. When he was 17 years old, he lost his life in a car crash. Ryo is later referred to as the demons' first victim, so this "accident" may well have been planned in advance by the demon forces.
As part of the plan to take over the Earth, the demoness Psycho Jenny conspired with Satan to wipe the latter's memories and replace them with those of Ryo, modifying them slightly to suit their goal to infiltrate human society. So effective is Jenny's actions that Satan never suspects his true identity until he comes across a photo album showing a Ryo Asuka who he does not recognize as himself. He then reads about the real Ryo's death; during his ensuing identity crisis, a squadron of demons led by Psycho Jenny arrive, with Jenny restoring Satan's memories, setting the stage for the war to follow.