Professor Asuka was the father of Ryo Asuka and a famous research scientist.
The Professor was an elderly man, he had combed back grey hair and brown eyes. He wore spectacles and a large white lab coat.
The Professor was researching the origins of the demon race with several other scientists when he accidentally released some into the world. Fleeing as others were either killed or fused with he makes a video message to his son explaining to him the origins of the demon race and that he needed to be the next to combat them
- Unlike Professor Asuka of the manga, Ryo Asuka (Satan) really is his son.