Flame Princess

Flame Princess is the princess of the Fire Kingdom in Adventure Time. She is the same age as Finn. She made her appearance in Incendium. She is voiced by Jessica DiCiccio.

Appearance
She has long vermilion (orange-red) hair made of fire that, when down, falls down her back, and when up, takes an appearance similar to flames. Her skin is a sunglow color (yellow-orange) and she wears a long tank top dress that touches the ground. She appears to have a huge ruby on her head and one on her dress that may show her royalty instead of a crown. Her color scheme changes when wet, her skin changing to a pinkish hue and her hair to a lighter brown-pink. She has a body-type similar to Fionna's.

Personality
She has a very hot-headed personality and is described as "evil" by the Flame King. She angers easily and seems to have very loose control over her own powers, as demonstrated when she shoots flames out of her head, creating Flambo-like creatures, which is likely the cause of her imprisonment in the first place. The Flame King himself remarks that she is difficult to control. She may have a very slight crush on Finn (but since she only recently met him, it may be some time before she does actually start showing it).

Abilities
In her smaller, humanoid form, she is shown to have the ability to transform the other citizens of the Fire Kingdom into Flambo-like creatures (Flambo remarks that this method must've been used to create him as well, implying that this is not the first time Flame Princess has used this technique). She is also able to transform into a much larger, more dangerous form composed for fire which she uses to follow Jake back to his home, and then proceeds to burn it and everything inside. However, like many residents of the Fire Kingdom, she is weak to water. After unintentionally setting off some of Princess Bubblegum's liquid fireworks above her head, she is quickly reduced to a weakened state.

Relationships
Finn She does not actually meet Finn in person until the very end of Incendium, after which point she chases after Jake (who had been posing as Finn towards the end of the episode), and begin to burn down the tree house and all of the objects in it. After she is doused with water, Finn briefly manages to catch her as she falls, and brings her into the tree house where she angrily asks why Finn doesn't like her. Finn replies that he does, however, and the Flame Princess blushes, slaps Finn, and warns him never to mess with her again before fleeing. Any feelings she may have towards Finn are currently unknown.

Jake Jake enters the Fire Kingdom to court the Flame Princess on Finn's behalf, who was feeling heartbroken after being rejected by Princess Bubblegum. Although it is unknown how she feels about Jake directly, she does seem to enjoy his song, as well as the fact that he (accidentally) slays her father's jester. It should also, however, be noted that she also cheered after Jake was seemingly choked to death by (a fake) Finn, and she attempts to catch and kill him after (fake) Finn rejects her. Jake is the reason why she mad at Finn.