Devilman

The Devilman is unique demon and the main protagonist in the series, Devilman, created by Go-Nagi.

Origin
Devilman was once a boy named Akira Fudo, who lost his family in an accident in the polar regions during research by Demons, led by Lucifer. However, things went to somewhat good when he lived with his love interest, Miki. Sadly he never forgave the demons leader for what happened, and made a vow to not let it happen to anyone else. It was then he met Aaron Matsuhiro, and his friends. He told the group his story and became really good friends with them. One day, out of all things to appear, was a demon, revealed to be none other than, Devimon. He tried to bring destruction to Akira's world, and took Miki as a result, turning her into a Heartless. Akira was devastated, but fortunatly, Aaron gave him a special crystal when he finally found something he wanted most, Miki. In order to rescue her, he made a wish to grant him special powers to fight of Devimon. He got his wish as he managed to transform into a half demon, half human warrior, defeating Devimon, and saving Miki. He used his new powers to protect people in many worlds, and dubbed himself as Devilman.

Trivia

 * Devilman will appear in the future.