Astral

Astral is a being from the Astral World in ''Yu-Gi-Oh! ZEXAL ''that serves as the secondary protagonist of the series along with his partner and eventual friend Yuma Tsukumo. He was sent to the Human World by Eliphas to destroy the Barian World in order to Rank-Up their world, but after Kazuma Tsukumo modified his programming, he was sent to Yuma instead.

Upon arriving in Yuma's world, his memories were scattered in the form of 100 "Number" cards. While originally he only retained one of the "Numbers", he knew that when two or more "Numbers" confront in a Duel, they will battle each other to consume one another, allowing Astral to absorb vanquished "Numbers" and recover pieces of his memories. Since pursuing the other 99 "Numbers", he and Yuma have retrieved all 100 pieces of Astral's memories along with each respective "Numbers", with the addition of attaining eighteen Chaos Numbers plus a Rank-Up and Rank-Down version of Number 39: Utopia.