Muhari

A former member of the Red Dragons, a resistance against the Tentei army.

He was living as a hermit with his young son Haru until he learned the Imperial forces were hunting down the Dragons, led by Geld, whose face was scarred by Muhari in a previous fight. Muhari decides to confront Geld once again, but with his body weakened by illness, he loses his life in the battle.
Hal and the remaining Red Dragons attempt to avenge his death, but it is only when Kenshirō appears that Geld and the Imperial Punishment Squad are destroyed.

(Source: Hokuto Wiki)