Lana is a tomboy, contrasting with her twin's more girly personality. She loves to play in mud and enjoys getting her hands dirty. Her pleasures are found in filth of all kinds, and anything unhygienic, from frogs to digging in the trash for chewed gum to doing business outdoors. Despite her tomboyishness and gross habits, she is a decent enough person and is loving towards her family. She also helps her family with more of the household jobs like unclogging the toilet and cleaning the animals out.
She is a junior expert plumber, as seen in "Sleuth or Consequences", where she uses "Big Bertha" (a plunger) to unclog the toilet (although she also aims to make a poop big enough to clog the toilet herself). Other example being in "Suite and Sour" where she fixed a shower. She also possesses extensive knowledge in automotive repair and machinery, and sometimes can be seen fixing Lola's car or even Vanzilla.
In "Snow Way Out", she is shown to be stingy when she refused to give the coupon for Flip, but later she got over it at the end.
"Lana Loud is the resident Ms. Fix-It, and is always ready to lend a hand, no matter how dirty the job. Need your toilet unclogged? Snake fed? No job is too tough, or too gross to take on. All she asks in return is a little A-B-C gum, or a handful of dog food."
Lana is nearly identical in her physical appearance to Lola. She has blonde hair, with two downward pigtails tied down with red scrunchies, and is missing her front teeth, like her twin does.
She wears a red baseball cap backwards with a small square hole, white sneakers with blue stripes, and a murky green (light blue in live-action) t-shirt under dark blue overalls. Her original design used the same outfit, but with black Mary Janes. Her nightwear just consists of a murky green nightshirt. Her swimsuit is a blue one piece, which looks like overalls. Her snow attire consists of a yellow coat with matching pants, blue boots with matching gloves, completed with green earmuffs.
Lana's hat is a red baseball cap that she wears in every episode she appears in. Lana never wears her hat forwards, she always wears it backwards, and Lana is also shown to sleep with her hat on. The only time where Lana did something that involved her hat was when she wanted Lincoln to sign it in "The Loudest Yard".
In an alternate universe where the sisters are boys, Lana is a boy named Leif. Similar to Lana, Leif is obsessed with mud, dirt, and animals. Unlike Lana, who is missing her front teeth, Leif is missing his canines.
However, he is much more abrasive than Lana, being mean towards his twin brother Lexx (Lola). He is also very harsh to Lincoln and plays keep-away with the time watch that he needs to go home.
However, in the alternate universe where there is one girl and ten boys (instead of one boy and ten girls), Leif's shown to be very caring and protective towards Linka Loud, Lincoln's female counterpart similar to Lana with Lincoln.
Leif eventually ceases to exist, as the entire adventure was all just a dream.
In the minicomic Deuces Wild!, Lana interprets the superheroine called Royal Flush, who is also one of Ace Savvy's sidekicks. She uses a pipe wrench to open up a fire hydrant. 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. This was Lincoln's fantasy based on his sisters helping him change Lily and take the trash out.
She appears in Lincoln and Clyde's comic in "Pulp Friction", where she uses her wrench to loosen the bolts on the shark tank, which prevents Wild Card Willy from escaping. This episode also has Lincoln come up with the Royal Flush as part of a contest.
In "Kings of the Con", Lana goes to the convention with her siblings dressed as the Royal Flush and impresses everyone there.
The Royal Flush wears a red bandit mask and cape, teal armbands and shirt, blue pants, a brown utility belt, and maroon boots. Her name comes from the highest hand in poker, and the fact that Lana repairs toilets.
Beulah is a rabbit from Lincoln's dream where he has 25 rabbit sisters in "White Hare". She acts and dresses like a cowgirl and uses a lasso to catch whoever she's chasing. She is loosely based on Lana in that she is willing to get dirty to achieve her goals.
Ribbon is a frog version of Lana who she came up with in the story the children were making up in "A Dark and Story Night". His name is a pun on the "ribbit" sound made by some frogs.
Ribbon is human-sized and can talk, but lives in a pond. He wears a cap like Lana's, but nothing else. Even though Lana is a six-year-old girl, Ribbon is an adult frog.
In the story, Ribbon is one of the main protagonists, who accompanied Triton (Lincoln's alter-ego), Princess DeLola (Lola's alter-ego), and Lisa's robot alter-ego on a mission to find shards of an electric crystal. Ribbon had eaten one of the shards, which made him glow in the dark, and eventually pooped it out at the end of the story.
When Lana grows up, she wants to be a "plumber-veterinarian-steam fitter".
Her favorite things to eat are boogers and ABC bubblegum.
According to Chris Savino, he states that the sisters who are girly-girls or fashionistas are usually seen with three eyelashes (Leni, Lola, and Lily). Due to being Lola's identical twin, Lana also has three eyelashes, but is a tomboy instead.
In "Frog Wild", it is revealed how she met Hops, and how he became both her pet, and her friend.
In "Head Poet's Anxiety", Charles, Cliff, and Walt are seen when Luan is eight, meaning that Lana was a baby when she found them.
"The Sweet Spot" reveals that she owns a peashooter which she uses in Vanzilla. As such, Lincoln does not like sitting in front of her on road trips because of her annoying him with it.
"Predict Ability" reveals that she always looks for anything edible in every dumpster she passes.
"Training Day" establishes that she and Lola have their own twin language even Lisa cannot understand, and that they can tell where the other one is by smell. This secret language was probably invented after The Many Faces of Lincoln Loud, as in that comic, Lola is seen attempting to invent a secret language.