Grunbeld, known in Japan as Gurunberd (グルンベルド Gurunberudo?), is a member of the reformed Band of the Hawk, and an exceedingly strong apostle. He is a giant, red-haired man in scale plate armour that resembles a dragon and armed with a warhammer and a shield containing a hidden cannon. He is renowned as a famous war veteran in the northern part of the continent where he apparently held ground against a superior, overwhelming force of three thousand from Chuder, lasting for months on end. He fought Guts at Flora's manor; at first easily defeating Guts already battle ravaged body but was forced to reveal his Apostle form after Guts became possessed by the Berserker Armor. In this form, Grunbeld is a quadruped dragon whose outer shell is composed of stylized corundum crystal formations harder than steel and is able to exhale flames from his mouth.
Being a towering and hulking warrior and the strongman of the new hawks, he could pose as a counterpart to Pipin.