As a child, Luna had her interest playing classical music, until her passion for rock music developed when she was just 9 years old. She was still trying to find her own calling at the time. She went to her first concert, and witnessed the lead performer, Mick Swagger, on stage singing, and calling out to her. She took the stage with Mick and suddenly found out that the world of rock was where she was meant to be and that it was her destiny. Since that day, she has viewed Mick as her hero, because he gave her the inspiration to rock on.
Luna is very happy, wild, caring, and easily the loudest sibling of the entire family. What she likes most is singing, playing musical instruments, and being with her family. Along with Leni and Luan, she is one of the most caring and helpful siblings.
Before she became interested in rock music, Luna is a shy, gentle and classy girly girl, who is interested in classical music. She has her violin and doing her violin concerto. After her first concert, she developed an interest in rock music. She is a big fan of several rock groups, and her dream is to become a rockstar. She owns and plays an electric guitar, with which she has proved to be a very good guitarist. Her skills aren't limited to just the guitar though. She also plays the drums, as well as other instruments, as seen throughout the series, like her childhood instrument, violin in "Overnight Success". She sometimes talks with a fake British accent when she listens to music; something that her siblings consider to be an annoying habit.
Most of the time, she can be found practicing with her guitar or listening to rock music. She rarely gets angry, but when it happens she's not above threatening with her fists, and actually using them, like in "The Sweet Spot", "Chore and Peace", "It's a Loud, Loud, Loud, Loud, House", "Brawl in the Family" and "Garage Banned". Instead, she sometimes uses the vibration sounds of her guitar as a weapon to harm someone when she gets upset, making her the third most easily angered sibling.
She will get upset if someone turns off her music, and in some cases, she will get agitated by her siblings. She sometimes gets depressed when her family isn't with her, or when she upsets her siblings. This was most prominently seen in "House Music".
"Luna Loud loves music so much, she speaks in song lyrics! With a boisterous, free-spirited attitude, she is always ready to crank up the volume and rock out. Luna enjoys helping her siblings when they're in need, but she definitely puts the LOUD in Loud House!"
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 eyeshadow.
Her original design showed her with a black shirt, red skirt, and white boots, before her color scheme was transitioned to purple. In her final attire, she wears a purple t-shirt with a white skull, torn crew neck, and triangular sleeves, a plaid skirt similar to Luan's (only lavender), a white 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.
Her nightwear consists of a purple t-shirt with a skull on it, and matching slippers. For swimwear, she wears her signature shirt with matching bikini bottoms. Alternatively, she also wears a purple Hawaiian shirt and shorts.
In "For Bros About to Rock", it is revealed that she had a completely different wardrobe as a girly girl, 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.
Her guitar has a purple color scheme, similar to Luna's wardrobe, and it also comes with a purple guitar pic. As seen in "No Guts, No Glori", she can plug it into numerous amps.
Her guitar seems to be a hybrid of a Gibson Firebird, or Epiphone Explorer (with their iconic slanted body), and a Gibson V-Factor (with its iconic inward indent), resulting in a slanted 'X' body.
In Luna's episode of the Listen Out Loud podcast, she mentions that her main guitar is a Logan V-80 Shredder. According to Luna, she got it for her tenth birthday.
In the alternate dimension of the episode "One of the Boys", where Lincoln has brothers, instead of sisters, Luna is a boy named Luke Loud. Like his female counterpart, Luke is an aspiring rocker; however, he is shown to be rude and abrasive toward Lincoln, which completely contradicts how Luna is very caring towards Lincoln, as he uses his head for cleaning the toilet. It is also mentioned that he flushed Bun-Bun down the toilet.
However, in the "dimension" where the Loud children consist of one girl and ten boys, Luke's shown to be very caring and protective towards his sister, Linka (Lincoln's female counterpart). Luke eventually turns out to be a product of Lincoln's imagination as the whole adventure was revealed to be a dream, and Lincoln wakes up from it at the end of the episode.
In the mini-comic "Deuces Wild!" and its animated adaptation, Luna interprets the superheroine called Night Club, who is also one of Ace Savvy's sidekicks. She uses an electric guitar, that has a club as the head, with which she can produce powerful shock waves, and a jetpack to fly. In the comic, she is summoned by Savvy (played by Lincoln) alongside the rest of Savvy's deck (played by the rest of her sisters) to help him and One-Eyed Jack (played by Clyde) to defeat the gas monster. After they defeat it, they prepared to fight against a garbage monster.
Night Club made another appearance in "Pulp Friction", in the comic Lincoln was writing for the Ace Savvy contest. In that appearance, she used her loud music to knock back the thugs into a hole dug by the Eight of Spades.
Previously, in "Study Muffin", Luna and the rest of the sisters (except Lily), fell for Hugh and then said that Lincoln's teacher was "smokin'", which makes Luna the first known character on the show to be bisexual.
Luna, Lynn, Lincoln, and Lily are the only siblings who have ever been naked on screen.
According to her episode of the Listen Out Loud podcast, she was 9 years old when she attended her first Mick Swagger concert.
Her hair is the darkest shade of brown of the brunette sisters. In contrast, Luan's hair is the lightest shade of brown, followed by Lynn and Lisa's brunette hair, which are slightly lighter than Luna's.
Luna is one of four main characters to have freckles. The other three are Lincoln, Lynn, and Clyde.
She is one of four Loud sisters to wear earrings (in Luna's case, paperclips). The other three are Lori, Leni, and Lola.
This also makes Luna the only brunette sister to wear earrings, although Luan also has her ears pierced as seen in "Cover Girls".
She is one of two Loud sisters to wear eyeshadow (in Luna's case, purple). The other one is Lori.
She is the only Loud sister to wear boots.
Luna, along with Lynn, has more than one trophy according to "Making the Case".
Luna is the loudest of the Loud siblings.
Her name is the Latin/Spanish word for "Moon" and is also the origin of Latin word "Lunaris" which is where the English word "Lunar" comes from.
Her amplifier, Sterrett, is named after comic strip artist Cliff Sterrett, the same comic strip artist Cliff is named after.
In "For Bros About to Rock", it is revealed that Luna insists on going to her siblings' first concerts, trying to make it a good experience for them, only for her to ruin it. Lincoln's first concert was her first success.
Luna's ideal superpower is to be able to play superpower chords.
She is one of two Loud sisters to have a logo on her shirt (in Luna's case, a skull). The other one is Lynn.
Luna is strong enough to carry Lynn, as seen in "Linc or Swim".
Luna has many guitars, but the purple one is most likely her favorite.