Lumpy Space princess

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  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.

  
  He has also stated that he tries to scream lines as the character because "...that covers up sincere emotion."
  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.

  

  
  
  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 was also voiced by Pendleton Ward until Peter Serafinowicz voiced him in "The Prince Who Wanted Everything."

  
  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.
  She tends to use the word "lump" or "stuff" in the place where swear words could be used, and says "Oh my Glob" frequently.

  
  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.

  
  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 she has a talent for singing.