He is a monster

"Big sister, focus on that brute and leave these fools to your little brother and his handsome uncle," Klaus said, stepping between the Zombie King and the War Goddess, who had just pushed the Zombie Emperor back with her powerful strike.

"Are you sure?" the War Goddess asked, her eyes narrowing in concern.

"One hundred percent confident! Watch me kill a Tier 7 Zombie," Klaus joked, lunging at the Zombie King, who was now caught within his Ice Domain. Although his star qi was nearly drained, he wasn't worried. His goal now was to kill this creature, trusting that his stamina and strong physique would carry him through.

Klaus swung his sword, sending an arc of ice, coated with ice qi, toward the Zombie King. The attack struck a wall of earth that rose suddenly to block it.