At nine years old, Lucy is the fifth youngest of the Loud siblings. Her most annoying habit is popping up and scaring people, a running gag in the series. Lucy attends the fourth grade at Royal Woods Elementary School.
Lucy is a gloomy, cynical, deadpan, and mysterious goth girl who is almost always seen with a stoic frown. She is interested in occultism, poetry, and the works of Gothic authors, like Edgar Allen Poe and H.P. Lovecraft. She has an uncanny ability to seemingly teleport to different places, which often spooks her siblings, especially Lincoln. Some of her siblings refer her as a "spooky" girl. She frequently uses words to describe her actions, such as saying the word "Sigh" instead of actually sighing. Occasionally, she feels left out that nobody listens to her and everyone thinks she is weird (despite their obvious quirks), however this is likely not the reason for her gloominess, because "The Whole Picture", "The Crying Dame", and "Not a Loud" prove that Lucy frowned and wore black even as a baby.
Though typically rather gloomy, she is shown to be happy on several occasions. She squeals and giggles in "Heavy Meddle", along with her sisters, upon learning of Lincoln's romantic situation. Also in some other episodes she can be seen smiling from time to time (as opposed to her usual smirking), like in "It's a Loud, Loud, Loud, Loud, House", where she is joyfully celebrating the money finding with her other siblings, and in "In Tents Debate", where she is happy that she gets the option to go to "Aloha Beach". She is also shown to be rather compassionate, as she shows sympathy for Lincoln's dilemmas, and always shows her appreciation for his kindness.
In "Sleuth or Consequences", it is revealed that she was responsible for clogging the toilet with her book Princess Pony, stating that even she needs "a break from the darkness" once in a while. Despite her depressed and cold attitude, she looks to enjoy being with her siblings, and sometimes departs from darkness to have fun with them.
In "A Grave Mistake", Lucy was revealed to be determined and never gives up as she wanted to become the president of Morticians Club. After her actions at Ricky the Rooster's funeral causes the audience disgust, she becomes more acceptable and lets Haiku take her place along with her.
"Lucy Loud loves all things spooky and dark. She can usually be found reciting her moody poetry or sharing her morbid point of view. If you haven't seen Lucy in a while, don't worry... she has a knack of mysteriously appearing when you least expect it!"
Lucy has very pale skin and long black hair, with bangs long enough to cover her eyes. She is very thin, and a bit smaller than Lincoln. Lucy dresses in black and white, wears long striped arm sleeves and stockings, a black dress worn over a striped shirt, and black shoes.
Her nightwear is a white t-shirt and black-and-white striped pajama pants. Her swimwear consists of a striped swimming dress with black leggings.
In the alternate dimension where the sisters are boys, Lucy's counterpart is a male goth named Lars. Like Lucy, he shares the same room with Lynn but also shares with Lincoln (as Lincoln's original bedroom is still a closet), and instead of a bed, he sleeps in a coffin. Unlike Lucy, however, Lars is disrespectful towards Lincoln, obnoxious and aggressive, as shown when he punches the latter on his head after he accidentally scratches his coffin bed after getting a rude awakening.
Eight of Spades
In the minicomic Deuces Wild!, Lucy dons the superheroine alter ego, the Eight of Spades, who is also one of Ace Savvy's sidekicks. She uses a shovel with a spade-shaped head. 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. (In reality, all Lucy and her siblings were doing was changing Lily's diaper and taking out the trash.)
The Eight of Spades made another appearance in the comic Lincoln wrote in "Pulp Friction". In this appearance, she dug a hole in which two thugs were thrown into by The Night Club's music. This is also the episode where Lincoln came up with the Eight of Spades.
In "Kings of the Con", Lucy shows up at the convention dressed as the Eight of Spades, impressing everybody there along with her sisters.
Coincidentally, her alter-ego name also represents her age.
Bella is one of the rabbit sisters and a rabbit version of Lucy. She appears in "White Hare", and is the only rabbit who is not white.
Lucinda is a version of Lucy she imagines in "No End in Bite". When Lynn told Lucy to imagine an ending for her book after the last page was torn out, Lucy imagined herself as a stowaway on the pirate ship, named Lucinda.
Lucinda stowed away on the pirate ship and was mistaken for a ghost by one of the pirates. She then locked said pirate into a coffin and climbed into the crow's nest, sicced Fangs on the other pirates, and used the sail to protect Edwin from the sun. Afterwards, Edwin prepared to turn Lucinda into a vampire as a reward, but then the fantasy was interrupted.
Lucinda looks a lot like Lucy, but wearing a black ball dress with red trim.
Like Lucy, Dominic has black hair and a white body. Unlike Lucy, he is male, a ghost, good at basketball, and has a blue 5 on his body. He is said to be the ghost of a famous basketball player.
In the story, Tricksy (Lynn's alter-ego) agreed to give the protagonists of the story the crystal shards she was using on her shoes if they beat her at basketball, so the protagonists summoned Dominic to help them win the game.
Her name can be taken to mean "light", which is ironic because she likes darkness. It can also mean "of light complexion", which she does have.
Her name is also similar to a character from the novel Dracula. This is coincidental with her character since she likes vampire-related stuff.
Lucy and Lynn are roommates with the biggest age gap, five years apart.
This is because they are the only roommates who are not consecutive children, respectively the seventh and the fifth, with Lincoln being the sixth.
According to Rita and Lynn Sr. in the episode, "The Crying Dame", the reason why Lucy's hair conceals her eyes is because they were uncomfortable with her staring at them mindlessly, and let her grow her hair out, under the assumption that she will not stare at them anymore. (According to Lucy, she can still see perfectly fine through her hair, which petrifies her parents.)
Before that, her parents said that she is the only Loud who did not cry often when she was a baby.
In the pilot and "Left in the Dark", her hair was shaped differently than it is in the series. She was also given black gloves in development, but they were removed in the final production.
Lucy's name came from creator Chris Savino's wife's plans for a name in case they had more daughters, but it was never used as they later had three sons.
A running gag of the series is that Lucy always appears suddenly, scaring her siblings or other people.
Lucy believes that broccoli has feelings.
Lincoln, Luna, Lynn, and once by Lola, sometimes refer to her as "spooky".
She scares Lincoln more often than her sisters.
As shown in "Left in the Dark" and "Changing the Baby", she can scare her sisters out of their wits just by saying "boo" to them. So far, she has done this to Leni, Lynn, and Lisa.
She sits in the vents to think for writing her poems.
Up until "Sand Hassles", Lucy did not enjoy the beach due to the heat and brightness of the sun, the sand, and having to play sports. While she did want to go to the beach in "In Tents Debate", that was only because of the shark attacks, and Luna expressed surprise that she wanted to go.
In the comic "It's Just a Phase", it is revealed that at age one, she had trouble letting go of the past and buried Geo's predecessor in the yard.