The Holy Sword, as a legendary weapon that is unmatched by any other. Although he is considered the most powerful weapon in the world, he can be used by anyone. Unfortunately, upon finding him, most are unable to stand being around him for a long period of time. This is especially true when those who had previously encountered him show a look of absolute disdain at his mere presence. He has a large ego, ignores others while they attempt to speak by calling them "fools", and he goes on long, nonsensical rants. He demands that his meister perform one thousands tasks, such as a daily five-hour reading of his own book. His humanoid form resembles a cartoonish anthropomorphic creature with a very long snout, dressed in a white suit and top hat. Hiro, a loser student who would be considered popular at any other school, manages to satisfy Excalibur's demands for a time, which grants him instant teleportation, flight using large wings of light, and power attacks that cause explosions. This miraculous partnership soon ended when Hiro was unable to tolerate Excalibur's constant sneezing. While not with a meister, Excalibur spends his time in a rock in the middle of a shallow underground lake, which annoys the fairies that inhabit the area.