Of're anxious about Sephiria and Co. being comissioned to eliminate Creed.

—Mason Ordrosso

Mason Ordrosso



Biographical Information



Meison orudosso

Also known as

Number XII

Basic Information


Hair Color


Eye Color



Active (Manga)
Deceased (Anime)

Professional Information



Zero Numbers


Chapter 149 (Mentioned)
Chapter 184 (Debut)


Episode 4

Voice Actors
Japanese Voice

Rokuro Naya

English Voice

Randy Tallman

Image Gallery

Mason Ordrosso (メイソン オルドロッソMeison Orudorosso), the Chronos Number XII, is a character who vastly differs between the manga and the anime. In the manga, he is mentioned as the sole survivor of the Chronos Numbers who fought in the war against the Tao Masters. He only appears briefly near the end and his name and weapon are never revealed. In the anime, he is revealed to be a traitor to Chronos and the primary antagonist of the Eden Arc.


Mason has long, gray, spiked hair with sideburns and a thick mustache with each side as long as his hair. He wore robes while in Chronos, but as a Zero Number, he wore gold armor.


In the manga, Mason appears duty-bound, observant, and cheerful.

In the anime he is much colder and manipulative, having deceived everyone for over twenty years so that he could complete his plan. He wanted to fuse Eve with Eden in order to recreate Earth with only the finest humans, all of whom would be under the control of the Zero Numbers.


Mason is said to be the oldest Chronos Number, and was the only one alive to actually witness the Taoist War. He learned many high-level Tao techniques from their leaders, but stayed in Chronos until present day.


Manga Summary

Chronos Number XII. Mason is the eldest member of the Chronos Numbers. Although he never participated in a single battle in the series itself, he is the wisest and most experienced out of all the Numbers. It is explained in the manga that he was the lone survivor of the last time the Chronos Numbers fought against Tao-users. He only appears in the final part of the manga, witnessing the explosion of the castle from afar with Belze Rochefort. He asks No. II if he is worried about the other Numbers, to which Belze bluntly replies no. Mason is also briefly mentioned by Sephiria Arks.

Anime Summary

After the final confrontation with the Apostles of the Star, Mason and his team of Numbers defect from Chronos and kidnap Eve. Train Heartnet, along with the Apostles and Chronos, follow him in order to save her, and take on Mason's Zero Numbers. Train attempts to fight Mason himself, but is stopped by Creed Diskenth, who tells Train to hurry ahead and find Eve. Mason is destroyed along with his team when Eden is, since they were all connected to it.

Equipment and Abilities

Mason's Armor

Armor: Mason's Tao is an invincible armor that increases his strength. The full potential of this Armor is obscure, but it seems powerful, seeing as he was able to defeat Train, Belze, and Sephiria with it.




  • Mason is the only number to have been a Tao User.
  • He is the oldest of the numbers.
  • Mason is the only number who is never shown wielding an Orichalcum weapon.


Main Train Heartnet  |  Sven Vollfied  |  Eve  |  Rinslet Walker
Independent Saya Minatsuki
Sweepers Alliance River Zastory  |  Kevin McDougall  |  Silphy Deacroft  |  Lacdoll  |  Gallom
Elders Willzark
Chronos Numbers Sephiria Arks  |  Belze Rochefort  |  Emilio Lowe  |  Kranz Maduke  |  Nizer Bruckheimer  |  Anubis  |  Jenos Hazard  |  Baldorias S. Fanghini  |  David Papper  |  Ash  |  Lin Xiaoli  |  Beluga J. Heard  |  Mason Ordrosso
Chronos Erasers Clevar
The Apostles of the Star
Main Creed Diskenth  |  Shiki  |  Echidna Parass  |  Kyoko Kirisaki  |  Charden Flamberg  |  Durham Glaster  |  Leon Elliott  |  Maro  |  Doctor
Other Deek Slasky  |  Preta Ghoul  |  Eathes  |  Igor Planter  |  Gyanza Rujike
Other Annette Pierce