Oscar is the charismatic leader of Ghalaron. He's the youngest of all of the survivors, but because Ghalaron doesn't really know how to work together, Oscar was selected as the leader. He's always trying to keep everyone together, and always trying to stop everyone from fighting. He's strong-willed, confident, creative, and brilliant. However, he's prone to making very rash decisions and ends up getting people killed by trying to stop the fighting. His motivation is to use the spectral diamond to preserve peace in the province.

So while Oscar is good at being a leader, and keeping people together naturally, his sometimes rash decision-making puts people in danger.