Ruijerd Superdia

Ruijerd Superdia is a major supporting character in Mushoku Tensei: Jobless Reincarnation. He is a powerful warrior and the former leader of the Superd tribe's elite group, who once loyally served under the Demon God Laplace during the ancient war.

He belongs to the Superd race, distinguished by their porcelain-white skin, emerald-green hair, and a red gemstone on their forehead. Ruijerd is tall, muscular, handsome, and appears in his physical prime despite being over 500 years old.

Due to Laplace's manipulation, the Superd tribe was cursed with a berserk reputation, leading to widespread fear and discrimination against them. Ruijerd accidentally killed his own son (who freed him from control) and now carries immense guilt. He travels the world with a strict warrior code—especially protective of children and comrades—aiming to clear the stigma against his nearly extinct people and restore their honor.

In the story, he rescues and teams up with Rudeus Greyrat and Eris Boreas Greyrat on the Demon Continent, forming the adventurer party Dead End, where he acts as a stoic, honorable guardian figure.