Cotton Candy Princess

Cotton Candy Princess is a princess who appears in "His Hero". In the Billy's Song flashback, Billy rescues her from the Fire Count, then she feeds him a piece of her hair. She has light, pink fluffy hair that resembles cotton candy, wears a long-sleeved purple dress with mauve detail and a crown with a red gem encrusted on it. She appears to be of short height, compared to Billy, but considering that he is much taller than other characters, she may be of a regular height. In "Susan Strong," a painting inside the candy palace shows Princess Bubblegum with an elderly, gray-haired version of Cotton Candy princess(which may be Cotton Candy Princess' mother or grandmother) ,which may mean that the two are related, or that there is some kind of royal candy lineage. She is presumed to be deceased or to have been dethroned by the time of the series. She may have also been the one that planted the Cotton Candy Forest.

Appearance
Cotton Candy Princess is more disproportionate than the majority of humanoids in The Land of Ooo, as her head is larger than her body and limbs combined. This is also accentuated by her large amount of hair, which is made out of pink cotton candy. She wears no shoes, and wears a deep purple dress with stripes of light purple. She wears a gold crown with a ruby on the tip, similarly to most princesses of Ooo.

Trivia

 * By the timeline, she could be an ancestress of Princess Bubblegum, since she is a candy person and her rescue from the Fire Count happened when Billy was young, while now he's old.