Ashida

Ashida (アシダ, "Ashida") is a spirit from the manga series of Shaman King.

About
Ashida was a visual art and manga club member who died after staying awake for 15 days straight.

Asakura Yoh employed the spirit to help him in school.

After Asakura Hao became the Shaman King, Ashida boarded the Soul Train and helped keep Yoh and the others from being pulled into oblivion.

Anime/Manga Differences
He is a manga only spirit and does not appear in the anime series.