Zatch Bell!

Gelios and John Owen

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Ancient Mamodo
ゲリュオス Geryuosu
Mamodo Stats
Gender: Male
English Actor: None
Japanese Actor: Yutaka Shibayama
Mamodo Team Stats
Partner: John Owen

John Owen (ジョン・オーエン Jon Ōen)

The Sienna Book
Book Burned In Episode 61 And In Chapter 116.
Debut Episode: 59
Debut Chapter: 111
Book Burned By: Tia and Megumi Ooumi

Gelios (ゲリュオス, Geryuosu) and John Owen (ジョン・オーエン, Jon Ōen)[1] or John Ouen, are an ancient Mamodo team who confronted Zatch Bell and Kiyo Takamine and Tia and Megumi Ooumi, along with Alm. Their spells involve Armor. John Owen is a baseball player, which mind is brainwashed for Zofis. John's Japanese voice is provided by Keijin Okuda; English voice is provided for Kyle Hebert[2].


Gelios is at the water reservatory, along with Alm, protecting it from any intruder, and then they meet Kanchomé, who distracts them into a trap. After this, Ganz appears and he's taken for Kanchomé and Folgore (after Ponygon follow them). However, Alm and Gelios wake up and start attacking Zatch, Kiyo, Tia and Megumi. After using Akur on them, Kiyo makes a plan to escape from Gelios' attack. The two ancient mamodo then follow they into a more lower arena. There Zatch starts using a strategy to burn their books: Don't hit the bookkeepers. Later, they use their strongest spells: Egdoris Neshiruga, Bao Zakeruga, Gigano Dioderuk and Ma Seshield. While those attacks cancel each other, Megumi gets Alm and Gelios' books. Seeing that there's no chance of winning, Alm tells to them everything that he knows, and fades along with Gelios.

In the manga Gelios's spirit is seen assisting Zatch along with the other Mamodo's in his final attack against Clear Note, After Zatch became king he was revived along with the other Mamodos and is shown to be in the same grade as Laila, Pamoon, Hyde, Reycom, Pokkerio, and Paramakion.


Gelios is a snake-like mamodo whose face is reminiscent of a court jester. He posseses only one water spell (Akur) in the anime, and in the manga he has only the three other spells. John Owen is a man that's probally a baseball player, and he's a fan of Folgore, along with Mamiko (Alm's partner).


Japanese Name:Degaruku (デガルク)
Type(s):Attack Episode:60 Chapter:113
Description:His horns elongate and stab the enemy.

Japanese Name:Garuderuku (ガルデルク)
Type(s):Attack Episode:60 Chapter:114
Description:Gelios opens his mouth wide and spins.

Gigano Dioderuk
Japanese Name:Gigano Dioderuku (ギガノ・ディオデルク)
Type(s):Assist/Attack Episode:61 Chapter:115
Description:Gelios gains new armor and spins at high velocity.

Japanese Name:Akuru (アクル)
Type(s):Attack Episode:60 Chapter:113
Description:Fires a stream of water from his mouth.(Anime only)


  1. NationMaster - Encyclopedia: Millennium Mamodo on Nation
  2. Zatch Bell!: The Labyrinth's Angry Torrent: Cast lIST - on

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