Kurt was raised by a group of Yeti, his main caretaker was the leader of the group, the “king” if you will.
Because of this Kurt grew up honorable and loyal to the species that raised him and pledged himself to the crown. He’s a but of a wild man, but he is well put together and presentable.
Kurt being a child raised among the Yeti, slowly became a folk hero defending and protecting all who he could, being beloved and respected by the community of the cold and chilly north.