Flame Princess

Flame Princess is the princess of the Fire Kingdom. She first appeared in "Incendium." She is voiced by Jessica DiCicco.

Jake
Jake enters the Fire Kingdom to court the Flame Princess on behalf of Finn, who was feeling heartbroken after being rejected by Princess Bubblegum because he loved her so much. 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 kills her father's jester by spilling water on him (though it should be noted she seems upset about it until Flame King says "I do hate my jester"). She also doesn't seem to care that Prince Finn "killed" Jake, but was instead just happy she just had a prince to date.

Finn
She does not actually meet Finn in person until the very end of "Incendium." After she is doused with Liquid Pyrotechnics, Finn catches her as she falls off the roof, unconscious, and brings her into the Tree Fort. On awaking, she angrily asks why Finn doesn't like her. Much to her surprise, Finn replies that he does like her, causing her to blush. Confused about how Finn could say one thing and then immediately contradict himself, she slaps him and warns him never to mess with her again - she was unaware that it was Jake as "Prince Finn" that said he didn't like her.

In "Hot to the Touch" it is revealed that she does like Finn. Finn remarks that he likes Flame Princess as well, but he is unable to approach her. Every time Finn puts out flames that she makes it seems to harm her, causing Flame Princess to believe that Finn is intentionally hurting her. She tries to talk herself out of liking Finn because he hurts her, not recognizing his claims that he was "not trying to" were genuine. She concludes Finn is trying to "impede" her, leading to the somewhat illogical conclusion that she should turn the Goblin Kingdom into her own fire kingdom. When Finn realizes he cannot make her understand, he breaks down and cries wishing he could "just like a girl." One of his tears falls onto one of Flame Princess' flames as she leaves the ravaged city, causing her to turn and witness him crying. She becomes convinced that he is a water elemental, since the only thing he seems to do is cry. She comes to the conclusion that they are opposite elementals and that even if they like each other, they can never be together. However, Finn suggests that they try to make it work, and that he can take it. She seems happy that he would want to "defy nature" for her, and both lean in to hug one another. As they hug Finn gets burned and pushes her away. She looks at him appearing unsure but still glowing, and then leaves saying "bye Finn."

Denizens of the Fire Kingdom
She seems to have very little concern for her own subjects, as she transforms a small group of citizens into flambits solely because they idly whispered behind her back. This may have been an accident because, in "Hot to the Touch," it appears she does not have complete control of her powers. Her father, the Flame King, keeps her locked in a lamp - possibly because of her nature. Despite this, she does not appear to harbor any ill will towards him.

Appearance
Flame Princess has long orange-red hair that made of fire that when wet, falls down her back, and when dry, takes an appearance similar to flames. Her skin is sun colored (yellow-orange) and she wears a long tank top dress that touches the ground and she's barefooted. There is a red gem on both her forehead and her dress.The two rubies are similar to the many small rubies that Flame King has on his armor suit. She has black eyes that sparkle white and yellow in light. When her flames are doused her skin changing to a pinkish-gray hue, her hair to a lighter brownish-pinkish-gray and falls down her back, but once in dry conditions she returns to normal quickly.

She has a body-type similar to Jungle Princess and Fionna's. Patrick Seery has stated that she is based on a candle.[2] In the episode "Hot to the Touch", Finn viewed her like a steam of a puppy's nose searching for ham in the snow, and a cute little flower, and calls her beautiful. And, It may not actually have been intentional, but she seems to have yellow eyes, as seen in the two screen shots.

Abilities
Flame Princess is able to conjure up flames at will. She has the ability to transform the other citizens of the Fire Kingdom into flambits. She is also able to transform into a much larger, more dangerous form composed purely of fire. Flame Princess can also hurl fireballs that vary in size, from about baseball-sized to larger than Finn. She is weak against water, shown after unintentionally setting off some of Princess Bubblegum's liquid fireworks and when she puts her hand into a pond. The liquid pyrotechnics quickly reduced her to a weakened state in which her skin changes to dull shades of grayish-maroon. It's revealed in "Hot to the Touch" that the fires that Flame Princess make are a part of her, and snuffing or dousing the fire causes her pain. This is first shown when Finn began to frantically stomp out flames surrounding him. She appears to be able to consciously extinguish fire she has created; she does this when she notices Finn crying. She can also "fly", leaving behind a trail of flames.

Personality
She has a very hot-headed personality and is described as "Passionate" by Finn. The Flame King himself remarks that she is difficult to control. She seems to be very sensitive and quick to judge. As a result, she angers easily against even her own citizens - she sends fireballs at them creating Flambits, which could be cause of her imprisonment in the first place. She is also very impressionable in a positive way; she started glowing when Finn called her beautiful. She was also very interested when Jake was giving her gifts in the episode "Incendium" and excited when her dad let her date her "prince." This excitement quickly turns to anger when "Prince Finn" rejects her. In the episode "Hot to the Touch" she shows curiosity about her new surroundings by lighting flowers on fire. At the end of "Hot to the Touch" she showed that she liked Finn, but thought that they couldn't be together because of being opposite elementals (she thought Finn was a water elemental). Pendleton Ward has referred to her as "intense."

Quotes
See Flame Princess/Quotes

Trivia

 * Pendleton Ward and the show's cast first introduced her at Comic-Con 2011.
 * Natasha Allegri has drawn Flame Prince, a gender-swapped version of her.
 * The reason Flame Princess was locked in a lamp is unknown. It may be because her father didn't want her breaking out and going psycho. Alternately, she may have become psycho from being locked up all the time. It could have also been for her own protection.
 * It is unknown where Flame Princess is going to live after what happened in "Hot to the Touch." She might go back to to the fire kingdom, buts since its her first time outside the fire kingdom she might not know how to go back there.
 * It's maybe true that Flame Princess has a crush on Finn, because she said even if they like each other they'll just hurt each other because Finn is a water elemental and Flame Princess is a fire elemental. She also seems to be happy when Finn admitted that he likes her and smiled when they tried to hug.
 * Whenever her flames are extinguished, even when not connected to her body, it causes her pain.
 * Flame Princess refers to herself as a fire elemental, and refers to Finn as a water elemental (alluding that she either does not know what humans are or believes they are extinct).
 * It may also be possible that since she had never met a human before that she doesn't know what they look like.
 * She is the only known princess to have invaded another kingdom (solo).
 * Flame Princess is one of the few princesses that has not been captured or even mentioned by the Ice King. This is probably because she is Finn's age and he has shown no interest in princesses that are young. It is also possible Ice King wouldn't dare go to the Fire Kingdom or try to kidnap her.
 * According to Adam Muto, she is a recurring character.
 * It is unknown if she is really evil or just, as Finn says that "she's passionate."
 * She doesn't resemble the rest of her species.
 * It is shown that she can cry. However, it is unknown what substance she cries.