The Thunderous Sword, three meters long, was a weapon that only Giants could use, and indeed, Martin of the Hanging Peak who actually wielded it was a Giant—this was due to the unique Bloodline Inheritance of their clan known as the 'Thunderous Behemoth.'
The Thunderous Behemoth is a type of Bison Giant Cow that has undergone Demon-beast Transformation. Its size is colossal, almost comparable to an elephant, with thick fur all over its body that can accumulate a tremendous amount of electricity during movement, and then launch thunderous electric arcs with its spiral horns to attack enemies.
