Ususually uncaring, fierce, he wouldn't dare give in or up even if he was on the ground dying. He is naturally stubborn, he shows little mercy if any at all if and when he is fighting against someone.
(human form) He always carrys a small knife, he carrys a sword every where he goes.
When Sanso was little he was like all kids, until his parents died in a fire accident he survived but barely. Ever since then he has wondered why he survived and they didn't. On that day his heart became hard, he hardly ever spoke to anyone and cared for few.