Münchhausen II, a German diabolist with dark green hair and black eyes, employs manipulative tactics and mind control to orchestrate violence, coercing Takeaki Kiryū into committing rapes and murders. His relentless experiments seek apocalyptic power, attempting to merge the demon Faburil with the Lord of Chaos—an endeavor ending in failure. Emerging in the post-apocalyptic era, he exploits ancient prophecies and advanced technology, hacking NASA systems and decoding hieroglyphs to undermine the Overfiend’s dominion.

He manipulates Yoenki by falsely implicating Amano Jyaku in her brother Suikakujū’s death, fueling vengeance-driven conflict. His schemes intensify with an atomic strike on Osaka to disrupt the Overfiend’s designs, alongside the creation of the Genocydroid D-9, a cyborg enforcer shrouded in ambiguity. During a final confrontation, the Overfiend, bolstered by a ritual involving reanimated corpses and Megumi Amano, overpowers and defeats him.

Münchhausen II’s ambitions revolve around subverting the Overfiend’s prophecy and reshaping reality through psychological manipulation, exploitation of human and demonic forces, and calculated acts of devastation.