Lumpy Space Princess (often referred to by her initials, LSP) is the princess of Lumpy Space. She is the third most recurring princess after Flame Princess and Princess Bubblegum. Finn and Jake have both traveled to Lumpy Space as well as to her parents' residence after she accidentally bit Jake in "Trouble in Lumpy Space."
Starting from the episode "To Cut a Woman's Hair," Lumpy Space Princess was living on her own in the woods of Ooo. According to her story in "The Monster," she lived among wolves, was banished, and began terrorizing a small village in order to eat their crops. She had returned to Lumpy Space, but as of "Princess Monster Wife," she decided to go back to living on her own in the woods as a hobo, presumably going back home every now and again to visit her parents.
Appearance
Lumpy Space Princess looks like a purple cloud and speaks in a somewhat deep, nasal voice, like most Lumpy Space People. She has sharp teeth as well as a yellow star on her forehead that glows while she is floating. There appears to be short hair on her body, which she claims to be more of her "lumps." When she punches herself (saying she can be "smooth"), she looks like a ball with arms. She is not seen wearing a crown, like most other princesses; however, the star on her head probably represents royalty, given that the only other Lumpy Space People with that characteristic are her parents. The star on her head is actually a jewel that goes very deep into her, as shown in the episode "The Lich." When using all the jewels collected to open the Enchiridion book, Lumpy Space Princess' star jewel just bounced off and was the only jewel not able to be used in the process.
Abilities
Like some Lumpy Space People, she has no legs or feet, but can float. Also, she can infect someone with the lumps if she bites a person with her teeth. As she says, "It's, like, werewolf rules." She can choose not to float if she wishes. This is shown in "Trouble in Lumpy Space," during the Mallow Tea Ceremony. As the yellow star on her head grew dim, she began to be influenced by gravity, fell and accidentally bit Jake. It is shown in "Gotcha!" that even when Lumpy Space Princess is fully capable of floating, she can still fall accidentally.
In the video game, she is shown to be able to increase her size when she consumes a can of beans. She also gains the ability to rip holes in space to travel between Lumpy Space and Ooo, as well as fire dark black plasma-like objects. She lives in Lumpy Space.
In Game Creator, her power attack is "Rainbow Spew," where she gains the ability to spit out rainbows.
Personality
Lumpy Space Princess acts like a bratty, apathetic, sassy, attention-seeking and willfully ignorant teenager, often texting on her phone. She is the archetype of the teenage valley-girl "princess" affecting a self-centered, often rude persona. Her off-putting personality may actually be a way for her to cope with her own insecurities about her appearance. In "The Lich" her star jewel did not fit into the Enchiridion, however this may be because she is not the actual ruler of Lumpy Space; her parents are.
Lumpy Space Princess can be ostensibly unmoved and uncaring about what goes on around her, using such words as "sure," "whatever," and "fine" frequently. She can also be physically apathetic and unwilling to make an effort, as shown in "Gotcha!" when she reluctantly helped Finn and Jake carry rocks, but complained the entire time (even though it was only two small rocks).
She prefers to be the center of attention. When people ignore her, she will yell things out to regain the spotlight, such as in "The Creeps" when she interrupted Finn by talking about her relationship with Brad. She also became upset (and violent) when another group performed the song she chose during the talent show in "Five Short Graybles," and again when Finn and Jake took the win out from under her. This is also shown in "Apple Wedding", where she revealed that she thinks that every party is her party and tries to ruin Tree Trunks' wedding by convincing that it was her party. She did not give up when Finn tries to block her and crawled to the ceremony instead, while yelling for everybody to pay attention to her. She even show-off her bouquet just to let everyone pay attention to her.
She often misinterprets things and jumps to conclusions, as shown in "It Came from the Nightosphere" when she saw Hot Dog Princess's soul being sucked into Marceline's dad's mouth, and became upset for not being invited to the "party." She will also create drama where none exists, such as in "The Monster" and "Gotcha!" where she assigns names and personalities to animals and insects in order to act out romance-driven storylines.
She tends to lose her temper and make fun of people, but she can sometimes attempt to be nice towards others. For example, when Jake contracts the lumps she agrees to help and takes Finn and Jake to Lumpy Space for the cure in "Trouble in Lumpy Space" and was forgiving towards Finn after he yelled at her in the same episode. She was also at the hospital, apparently concerned for Princess Bubblegum, in "Mortal Recoil."
Trivia
She is voiced by Pendleton Ward, the creator of Adventure Time.
Pendleton Ward admitted that he came up with Lumpy Space Princess's voice by cursing around the office in a valley girl accent.[citation needed]
He has also stated that he tries to scream lines as the character because "...that covers up sincere emotion."[citation needed]
Lumpy Space Princess may be able to vomit rainbows, as seen in "The Monster," but it may have been what she ate, possibly the tree bark or something before that. As shown in Game Creator, she was able to vomit rainbows once she gains the power attack potion.
She was the first person on the series to call Princess Bubblegum by her initials, "PB" as heard in "Ricardio the Heart Guy."
Lumpy Space Princess is made out of irradiated stardust, according to Pendleton Ward.[1]
She starred in an exclusive video on the Adventure Time Facebook page: "Adventure Time - ONE MILLION FANS!"
She has a gender-swapped version of herself: Lumpy Space Prince, who is also voiced by Pendleton Ward.
Pendleton Ward stated that if he had to date any female Adventure Time character, he would date Lumpy Space Princess because she has his voice.[2]
She tends to use the word "lump" or "stuff" in the place where swear words could be used, and says "Oh my Glob" frequently.
She has an exosuit named after her in the Cartoon Network game, Project Exonaut.
Lumpy Space Princess has a ringtone that is simply Turtle Princess saying, "Hey, gurl," repeatedly as seen in the episode "Gotcha!"
There are a couple of indications that Lumpy Space Princess is a teenager. In "Trouble in Lumpy Space" she goes to the Weekly Promcoming Dance, suggesting that she attends an equivalent to high school. Further proof of this is given in "The Eyes" where Finn and Jake are seen dancing at her Quinceañera, though it is unclear if "Quinceañera" has the same meaning in Lumpy Space.
Lumpy Space Princess is the final boss of Adventure Time: Hey Ice King! Why'd you steal our garbage?!!
She is one of the two princesses to have another emblem aside from a crown to represent her royalty as a princess. The other one is Flame Princess.
According to CN Latin America, her hobby is hot boys (seriously) and and she has a talent for singing.