Lumpy Space Princess (shorten to LSP) is the princess of Lumpy Space. She is voiced by Pendeleton Ward, the creater of Adventure Time
- LSP is voiced by Pen Ward, the creater of AT.
- People mistake that she's a boy, but is really a girl.
- She speaks in a thick, masculine valley girl accent.
- LSP has a super, semi deep voice.
- But while the series went on, her voice was toned up a little bit higher.
- LSP is 15 years old, though she acts like she's older than that.
- LSP can float.
- If LSP wants to stop floating, then she can push on the star on top of her forehead.
- She can infect someone with "The Lumps" if she bites someone.
- She was seen to barf rainbows, as shown in "The Monster".
- LSP seems to be a little bratty, kind of spoiled and sarcastic.