Harvar D. Éclair

Harvar is Oxs weapon and takes the form of a lance. In weapon form he has the power of lightning. Like Ox he is named after a university in this case Harvard. His last name is derived from the French word for lightning. Like most weapons he can change a part of his body into his weapon form in his case he can turn one his hands into the point of his lance form as well as generate an electric charge through an unchanged hand. As evident during the infiltration of the Arachnophobia castle he is fiercely loyal to Ox and prioritizes his safety above all else while maintaining an icecold composure in battle even when Ox does not. wikipedia