The Skull Knight is one of the most mysterious and prolific characters introduced in Berserk, a towering warrior dressed in full armor whose ornaments, especially his helmet, are shaped as parts of a human skeleton, hence his moniker, who rides a massive, ghostly black horse. Though ominous and macabre, he is an enemy of the Godhand and its acolytes, hunting down Apostles and devouring their Behelits; especially bitter is his rivalry with Zodd the Immortal, whom he was often showed to overwhelm with ease.

He wields a powerful sword that, when stuck down his throat, becomes a terrible, Behelit-coated blade capable of slashing rifts through reality itself, thus allowing the Skull Knight to move freely around the world or even between different dimensions.