Violence Jack
In "Shin Violence Jack", a reboot to the series, the storyline is set out somewhat differently. In this continuity, Jack is an alternate form of Amon, while Akira is now living as an amnesiac warlord known as the Skull King, with the iconic "Devilman" demon Jinmen as his chief subordinate. With the help of his child form, his true form as Amon, a young boy named Ushio, and the reborn Sirene (who merges with the heroic Sara, essentially becoming a Devilman), Jack leads the assault on the Skull King's fortress, succeeding in restoring Akira's memories and igniting a rivalry between the duo.