Shoko

Shoko, (a.k.a. The Ghost Lady,) is a undead character in Adventure Time. She was once a thief who is assigned by the Bath Boy Gang to steal the teen Princess Bubblegum's amulet, but died falling in a river while attempting to steal it in the night. Shoko then became a ghost known by Finn as "The Ghost Lady" and first debut in "The Creeps".She is voiced by Isabelle Fuhrman.

Personality
Shoko seems to be very responsible for her age but due to her parents' neglect, and she decided to live the life of a thief. Even though Shoko commits evil deeds, she still feels guilty for the problems she causes which is shown when she cries as she struggles to fight her emotions so she can steal Princess Bubblegum's amulet.