Thull

Thull is Oslak's little brother, who has a son called Dari. He was mostly only mentioned at the beginning of Spirit Walker, where Oslak goes insane from the honey disease, I have no idea if this disease has a canon name. Thull becomes completely invisible (metaphorically of course, it would be cool to have an invisible character though...) throughout the entire rest of the series, never to be heard from again. Yet another character with missed opportunity, ain't it?