it is not the gambling jushu.
This one is hard because it’s a minor character and the clues where very vague.
Bonus clue: this character killed his brother and has meet Jushu
It is not the jovial Rock.
It is not my poor boy Kaladin.
1. This character is male
2. This character is from Roshar
3. This character had a brother
4. This character is darkeyed
5. This character is a gambler
It is not the stubborn Dalinar. (look at me jumping on @AceBassMan's thing of describing the characters )
1. This character is male
2. This character is from Roshar
3. This character had a brother
4. This character is darkeyed
It is not the only character I possibly hate more than Moash.
1. This character is male
2. This character is from Roshar
3. This character had a brother (emphasis on the 'had')