Jinmen was a large hunched turtle-like demon with a sadistic personality. Because of his monstrous actions he has become iconic for what he provides for the protagonist.
- Jinmen (Manga): Jinmen's first appearance, killing a friend of Akira to lure him out.
- Jinmen (OVA): Jinmen, now with a more jagged appearance, murders and devours Akira's mother Suyako Fudo.
- Jinmen (CB Chara): Jinmen is sent to try and stop Akira, but is quickly decapitated by Miki Makimura. Afterwards, he spends the rest of the series as Akira's talking head companion. This is the only time Jinmen has been a reluctant ally.
- Jinmen (Grimoire): Operates under a human disguise under the name of "Mr. Death-Mask" he acts as a serial killer targeting human and demons including Illuge.
- Jinmen (Live Action): Appears to fight Akira in a forest after killing his friend.
- Jinmen (Devilman vs Hades): Fights with Devilman with enhanced abilities.
- Jinmen (009 vs. Devilman): Comes into conflict with Akira Fudo.
- Jinmen (AMON): Having a vastly differing design to his original, this Jinmen doesn't even come in contact with Akira.