 
Ghost Princess (formerly Warrior Princess) makes her first appearance in "Prisoners of Love" where she is kidnapped by the Ice King. She also makes appearances in "What is Life" in Ice King's Imagination Zone and in "Loyalty To The King," as one of the princesses who wanted to marry Nice King. In the latter Jack yells at her to make her go away which makes her think that Nice King hates her, causing her to cry. She seems to be very shy. She originates from Adventure Time.