Leon Cromwell

Reon Kuromūeru

Biographical Information
Name Leon Cromwell

Reon Kuromūeru

Aliases Blonde Devil
Platinum Devil

Demon Lord of the Frontier

Blessing Luck
Title(s) Demon Lord

True Hero

Gender Male
Species Humanoid Demon
Evolution Human
Hair Color Blonde
Status Alive
Professional Information
Country El Dorado
Rank S EP:1.000.000
Debut Information
Demon Lord Leon Cromwell. The one called the Blonde Demon.

Personality Edit

He doesn’t take men for partners. Even among women he only goes for the ones he desires.

His skill of evading the point is rather superb.

Appearance Edit

He has long platinum gold hair, blue narrow eyes, a well defined face, and skin so white that it is almost transparent. He is so beautiful that he is often mistaken for a woman.

Background Edit

Leon was originally a world traveler who was Chloe O’Bell's childhood friend. They were caught in the accidental occurrence of a dimensional distortion but Leon appeared in the world alone. He decided to search for Chloe and obtained the Hero's egg due to his desire to protect her.

He is the last born Demon Lord, the human “Demon Lord” Leon Cromwell. He with his overwhelming magical power rules over his increased number of Majin, he identifies himself as the Demon Lord of the frontier.

One of the Demon Lords, was furious with him, the Magic King (Curse Lord) had waged war against him. But he was beaten by Leon instead. It was also by Leon’s own hands. Due to this, Leon's "Hero's egg" hatched and he awakened as a true hero. In response to the situation, the other Demon Lords, not knowing that Leon is a hero, recognized him as a new Demon Lord.

Abilities Edit

He obtained Luck Blessing from Ramiris.

Magic Edit

  • Spatial Movement Magi

Ultimate skills Edit

  • King of Purity Metatron
    • An ability which draws purest energy possible from power, magic, aura, and skill
    • Holy Breakdown (36 th Style Annihilation’s Light of Holy Spirit Purification)
    • Triangle Pyramid (Sacred Tetrahedron Demon Sealing Barrier)


  • Flame Pillar (Holy Flame Rapier): Mythical class (Gods) rapier, the strongest sword in Leon’s possession.
  • Golden Circle (Golden Round Shield): legend class shield.

Relationships Edit

Ramiris Edit

He isn’t on good terms with Ramiris. From the very moment they met he had thought to kill her a few times.

Chloe O’Bell Edit

She is a childhood friend of Leon, a best friend. An existence he loved like a sister, his everything.

Shizue Izawa Edit

She was summoned instead of Chloe and gave her Flame Giant Ifrit to save her life.





Trivia Edit

  • His subordinates are reminiscent of the Super Sentai Warriors due to their color scheme.

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