He does not wear clothes that often.
A sociopath with trauma-induced mental illness and a propensity for violence at the drop of a hat, Hamop is not a nice man. His moods and actions fluctuate with the context that he's in. Sometimes he wanders around Orgrimmar, pissing people off just to get into fights, and sometimes he wanders the wilderness, empty of soul and looking for things to kill, or people to eat.
He reacts like an abused circus tiger. Do not touch him. If you must look at him, don't stare him in the eye. Due to his disdain for clothing, it's easy to see when he's aroused. If he is, just walk away. Run. Do not make eye contact. He is occasionally a rapist. (Not odd for trolls)
Hamop was the son of a Revantusk chieftain before the Revantusk allied with the Hord (for the second time), and he was an entitled little brat, and a bully to boot. Around the age of 11 or 12, he was picking on a girl from the village when a full grown woman stopped him, and bade the girl run. But she didn't let Hamop go.
She was a warlock, and not the nice sort. She trapped Hamop and kept him chained inside of a hollow tree deep in the forest and she tortured and tormented him until she broke his mind and his will. It took YEARS.
She raised him to be a savage, ruthless killing machine, and it backfired on her when he got loose one evening, after being raped (again). He turned years of torture back on his abuser and now roams free, looking for any purpose at all.
Hammy is mine