Galacta Knight

Galacta Knight is a very powerful and legendary warrior, given the title of the "greatest warrior in the galaxy." While most of his story remains a mystery, with the only known piece of it being that he used to be a renowned hero, he is said to be from the ancient past, a time that was forgotten. According to Galactic Nova, Galacta Knight was sealed away in fear of his power. Additionally, according to the Japanese version of his pause screen description in Kirby: Planet Robobot, Galacta Knight was sealed away many times throughout the ages, but was never successfully destroyed.