Gula has long been the peacemaker between the Sins -- the guy who gets along with everyone. He is fiercely loyal to all his siblings, to the point where he helped Ava escape when he thought she might face death, and assisted Luxi in a task that might have ended both their lives. Yes, he might tip the odds if he feels one of his brothers or sisters is in danger, but he does his best to walk the middle line. Overall, Gula's an easy going guy. Yet test his loyalty once, and it might be the last thing one ever does.
*denotes the book in which Gula is the lead character