Meruem had a rather humanoid build for an Ant. He was muscular and toned, despite his relatively small frame as compared to his servants. He had two long antennae on his ears and a large shell-like armor over his head that resembled a helmet. There were dark pigmented areas on his arms, legs, chest, and head. Meruem was always barefoot. He possessed a powerful tail equipped with a stinger that served as his weapon. Both his hands and feet had only four digits each.