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Zennon (ゼノン Zenon?) is the former grand general of Satan's demon armies in the anime series Devilman Crybaby. He was loyal to Satan until later he realized that the fallen angel wanted only Akira Fudo, who was human, to live alongside them.


Zennon is a large demonic beast, but is small compared to his other incarnations. Zennon's fur is thick, covering his entire body and he has bat-like purple wings under his arms. He has three heads, the left one being a blonde-haired head, the central being the most bestial with large horns and three eyes and the third head resembling some kind of human appearance with large yellow eyes and long green hair. On his chest is a large mouth lined with sharp teeth.

Zennon's non-demon form was that of three separate human bodies, his main being a tall, slim man with medium black hair and brown eyes.


Like all demons, Zennon could merge with a living organism in order to interact within the physical world. But unlike other demons, Zennon controls three separate human bodies. Zennon inherits powerful strength and speed compared to most demons, capable of overwhelming a transformed Akira Fudo in hand-to-hand combat. Zennon is also capable of flight with his massive wings.


Zennon is a fierce demon and a brutal leader who, like most demons, was violent, cruel, and only saw value in how his allies aided him in battle. As such, he follows only the strongest being while allowing anyone strong enough into his own ranks. But he is also willing to take matters into his own hands if he spots a weakness, commanding demons to kill Satan before he fully awakens after recognizing the fallen angel's interest towards Akira Fudo.


Zennon is first seen as his three human hosts having a meeting with other demons about their race being killed in a certain area. Zennon commands the demons to narrow down the area to find the perpetrator.

Later on, Zennon would appear in his demon form when he confronts Akira with the rest of his demon army. Zennon would try to communicate with Amon to get him to take over while slamming Akira on the ground hard. He would then kick Akira, sending him flying. One of Zennon's demons would try to attack in which Zennon would stop them, telling them it was his fight. Akira laid on the ground but quickly came back to his senses to continue the fight. But he was kicked into a building. Weakened, Akira turned back into his human form.

Zennon's fellow demons told him he had a chance to avenge both Sirene and Kaim, but one of his demons would miss their chance to continue fighting as Psycho Jenny stopped them from doing so. Just then, Miki Kuroda appeared in her Devilman form and saved Akira.

Zennon would later fight Akira on one-on-one again, still urging Amon to take over Akira's body. Later, Zennon died in another battle after being severely wounded by Akira. The demon lord was planning to overthrow Satan, as his men blew up the apartment the latter was staying in.


  • Zennon's three split form is quite similar to the ideas seen in Devilman Lady and Devilman Saga, where Zennon is built up of a combination of other demons.