Gussy Kenji

Gussy Kenji (グッシー健二) is a fictional character in the Shaman King manga and anime series. He is the spirit of a famous boxer.

About
Gussy Kenji was a famous and talented boxer. He took in a delinquent student named Tobinai Tatsushi and trained him, but after Gussy died in a car accident and his gym went out of business, Tatsushi reformed back into a delinquent. Asakura Yoh fought Tatsushi by using Gussy's spirit, and after being defeated, Tatsushi became good again.

Gussy was later temporarily summoned by Kyōyama Anna as part of a demonstration of her powers as an Itako.

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

Anime/Manga Differences
Although both anime series skipped over Gussy's story with Yoh, Gussy does briefly appear in Episode 3 of the 2021 series, when Anna summons the various spirits that have interacted with Yoh.

Trivia

 * In Shaman King: Master of Spirits and Shaman King: Master of Spirits 2, you can fight with Gussy Kenji himself. His attack is rapid-punch.