WN/Zero

Personality
Unlike Vega, who was given an aggresive personality, he wasn't given personality but in exchange for that his Calculation is far superior than Vega, thus he could be considered as Yuuki's Ultimate Creation.

Background
He was Created by Yuuki via Unique Skill Creator

He was one of Yuuki's 300 elite subordinates

Ryuma Clash Arc
It's Mentioned that he and other 300 Yuuki's Elite Subordinate were gathered in Manor at Eastern Empire Capital under order from Yuuki in order to discuss about Coup d'etat Plan after that he was Purged By Kondou, Damrada, Miraza and the Royal Knights No.7 - 10.

Tenma Great War Arc
Arios,Zero and Mai including 200.000 Angel were ordered by Velda to invade the Holy Empire Ruberius.

Later under Zero's instruction Mai used her Unique Skill Traveler to Teleport Arios,Zero and Mai back to Velda in order to evade the attack of Veldora's Ultimate Skill, Chaos King Nyarlathotep.

During attack on Tempest, Zero consumed the Labyrinth using Evil Dragon Lord Azi Dahaka. Because of the large energy from the Labyrinth, Zero lost control of his body to the Ultimate Skill and evolved into True Dragon, Evil Dragon Zero. He later was killed by Diablo, Benimaru, Zegion and Dino's combined attack and his skill, Evil Dragon Lord Azi Dahaka reduce to became a dragon core which later combined with Gaia and evolved him into a True Dragon.

Abilities
As one of Yuuki's Top Subordinate his abilities is far above Average Royal Knight

Ultimate Skills

 * Weapon Lord Shield
 * Evil Dragon Lord Azi Dahaka

Relationship
Kagurazaka Yuuki

Trivia

 * Altought Arios is Leader of Seven Angel of Punishments, Zero is considered as the strongest Member of Seven Angel of Punishments
 * He could be considered as Vega's Little Brother