Guardians of the human's. 

He hate BloodStain, but that's his freind too, he's trying to protect human's from his freind behavior. 

He can feel people aura either if it's bad or good, so he will always know if you're hiding something. But he will keep it to himself than just telling it, he's extremely strong and gentle with anyone, if they're a bad person

he's wearing a black sleeveless jacket, blue varsity jacket, black jeans and yellow shoes