Luna Loud is one of Lincoln Loud's ten sisters on The Loud House. She is the third-oldest of the Loud siblings, at 15 years old in seasons 1 through 4, and 16 years old in season 5. She is a perky teenage girl known for her passion for rock music, which she developed when she attended her first concert during seventh grade. Aspiring to become a rock star, Luna owns various instruments, the most prominent being her electric guitar. She frequently quotes lyrics from famous songs, and also has a habit of speaking in a British accent to imitate her favorite rock star, Mick Swagger. Like her older sister Leni, she is also caring and supportive of her siblings. Sometimes though, Luna can lose control of herself, get carried away with trying to improve things, and come off as annoying to some people.
Before she became interested in rock music, Luna was a shy, gentle and classy girly girl, who was primarily interested in classical music. She had her violin and often did violin concertos. Her passion for rock music did not come up until she was 9 years old. After attending her first concert, she developed her interest in rock music.
Luna is the first Loud sister confirmed to be bisexual. While she, along with her sisters, had a crush on Lincoln's tutor Hugh in "Study Muffin", she is also shown to have a crush on her best friend, Sam Sharp in the episode "L is for Love", and at one point, said that one of Lincoln's (female) substitute teachers was "smoking." In the third graphic novel, Live Life Loud!, it is revealed that the other kids are aware of her love for Sam and are fully supportive of it.
Luna is slightly taller than Luan, but shorter than Leni. She has short brown hair, styled into a pixie cut, freckles on her cheeks, and wears light purple eye shadow. She wears a purple t-shirt with a skull, torn crew neck and triangular sleeves, a plaid skirt similar to Luan's (only lavender), a light gray belt, and high purple boots. A distinguishing feature of hers is her paperclip earrings. She also wears three black bracelets on each of her wrists and a choker around her neck.
In "For Bros About to Rock", it is revealed that she had a completely different wardrobe before becoming a rocker. Originally, she had longer hair that went down to her shoulders, extra eyelashes, a girlish light purple shirt, white earrings, the same square-patterned skirt, white socks, with blue stripes worn high and black Mary Jane shoes.
Episodes focusing on Luna
- "For Bros About to Rock"
- "House Music"
- "L is for Love"
- "Roadie to Nowhere"
- "Really Loud Music"
- "Racing Hearts"
- "Deep Cuts"
- "Purrfect Gig"
- "Snoop's On"
- Luna being bisexual was hinted at in "Study Muffin"; when Lincoln brings up the mention of Ms. DiMartino, Luna is the only sister who says Ms. DiMartino is "smokin'".