Amon (Devilman)

Amon is a powerful Demon, and the source for Akira's demonic abilities. With incredible strength and fighting prowess he is known as the God of War in Hell. In Amon: The Apocalypse of Devilman, he is the main antagonist of both the OVA and the manga series after Akira loses control of his powers. Sirene was Amon's lover, but due to Akira obtaining Amon's powers, Sirene blamed Akira for his disappearance. During a Black Sabbath ritual led by Ryo, Amon tries to take over the human Akira Fudo, but due to his pure heart Amon's consciousness was suppressed and Devilman was born.

Appearance and personality
Amon appears as a powerfully built, towering red-skinned demon with two tattered black wings on the sides of his head, bright yellow eyes, and a black goatee. Black fur covers his shoulders, wrists and most of his lower body, ending with large red feet sticking out. He also has a black tail with a tuff of black fur at the end and large black wings while in flight. True to his nature, Amon is an incredibly uncontrollable, berserk demon who fights against any and all who cross

his path. In Amon's most extreme moments of bloodlust, he is shown to have little to no regard for the safety or wellbeing of any of his allies, a disturbing trait proven fact when he was shown cannibalizing Yumi during his rampage. Amon is also extremely arrogant, always looking for the strongest opponent. However, his personality trait proves to be detrimental to his plans as Amon can easily underestimate his opponents and results to taunting or belittling them.

Apocalypse of Devilman
After Akira witnesses the brutal murder of Miki and her family, Akira's anger causes Amon to finally regain control over the boy, causing a large red humanoid with black wings and fur to emerge from Akira's body. After Amon emerges, he no longer has a human host to control him, leading the demon to become berserk. He then goes on an unrepentant slaughter, killing both friend and enemy alike, even going so far as to devour a demon who was a close friend of his. After Amon finally confronts Satan, he attempts to fight against him, but is stopped when Satan uses his powers to awaken Akira (who was sealed deep within Amon's sub-consciousness). In a final confrontation, both Amon and Devilman clash within their consciousness, with the former gaining the upper hand. At the verge of death, Devilman remembers the time he spent with Miki while she was alive and uses it as his reason to fight back, ultimately defeating Amon and ending the demon's reign of terror.