Despite his appearance he was a man of dark and violent temper.

He was a man of enormous energy but with a violent temper.

He's not a bad man, but he has a violent temper.

He has a violent temper and is known to carry a knife at all times.

He has a very violent temper and it's dangerous to cross him.

She was someone that you never wanted to cross because of her violent temper.

Holland had a violent temper, which got him in trouble several times.

Thomas was known for having a hot and violent temper.

He had a violent temper and frequently killed people without reason.

If he had any kind of violent temper, I'm sure he'd have shown it here.