Garou (ガロウ, Garō) is a former disciple of Bang and was considered a prodigy. But one day, he was kicked out from his dojo for going on a rampage once he got bored with everyone. He’s one of the strongest characters in the series and plays a major role as the main villain in the Hero Hunt arc. His dream is to be the strongest monster ever and become the world’s first God-Level Threat, or so he says.

Garou is a young man with sharp features, yellow eyes, and long silver hair that spikes upward in two large prongs, giving a feeling of a young wolf. He has a lean muscular build. He wears a tight, black, long-sleeved shirt, loose-fitting white martial arts pants, a yellow sash around his waist, and tai chi slippers on his feet.

As Garou fights further in the Human Monster Saga, his appearance becomes more monster-like over time. After being kicked by Saitama, he removes his shirt and wraps his upper body in bandages as he recovers. While fighting Genos, his right eye turns red and bloodshot, and his hair becomes red after he rubs his own blood into it.

Next, he is given a long-sleeved black shirt and tight black pants by the Monster Association. He retains a large diagonal scar across his face after being brutalized by Royal Ripper, and his right eye remains severely bloodshot. His clothes are torn and two strands of fabric flow behind him like scarves due to his encounter with Overgrown Rover, and after being defeated by Orochi his entire body is black with soot. The soot is blown off when Garou blocks Superalloy Darkshine‘s Superalloy Bazooka, and the force of the attack also shreds his remaining clothing into a spiral pattern around the hole Orochi put in his torso.

After his fight with Darkshine and the subsequent destruction of the Monster Association base, Garou begins transforming, with his hands turning into claws, his teeth transforming into fangs, and his skin hardening. When he emerges aboveground, Garou has hardened, armor-like skin and hair, razor-sharp claws, and glowing veins running along his body.