This page describes Leni Loud's relationships with her family and friends.
Her siblings generally
Her younger siblings see her as a very sweet and kind-hearted older sister, contrasting Lori, but her ignorance and clumsiness can sometimes cause harm, or irritation for them, as much as they know she doesn't mean for it. When her siblings are in need of assistance, she will always come to their aid, without letting her ignorance get in the way. All-in-all, they love her very much, and take very good care of her.
Leni and Lincoln get along very well. Most of their interactions are generally positive, despite Lincoln getting annoyed with her absent-mindedness from time to time. Along with Luna, she has the best relationship with Lincoln of his older sisters.
It's noteworthy to point out that Leni has been shown to be very accepting of Lincoln's odd white hair, as seen in "Chore and Peace", when she said it makes him look like their grandfather, Pop-Pop, and in "Ties That Bind", where she defends it when their parents seemingly decided to "get rid of" him.
In "Driving Miss Hazy", he helped her to pass her driving test, by using her semi-language. He also convinced her to not give up trying.
In "Linc or Swim", she was always the first one to invite him to spend time with his other sisters. First, to "chill" with them next to the open fridge, second, in to the "Paradise for One" pool he had set up, (this shows how nice Leni really is compared to the others, unconditionally offering him to get in to the pool with her and Lori) and third into a newly purchased pool, even though he kicked them out of his.
In "Along Came a Sister", Lincoln brought his class's pet tarantula home for the weekend and Leni attempted to kill it, due to her fear of spiders. However, after she learned Lincoln will get into trouble if he let his class' pet die, she protected it to save her brother's status quo, showing how much she loves her brother.
In "House Music", the siblings decided to form a band, and while all the sisters left Lincoln hogtied to the floor, thanks to Lana, Leni was the only one who returned for Lincoln, apologized to him, and she carried him like a handbag, much to his annoyance.
In "Roughin' It", it was revealed that sometimes Lincoln and Leni sew clothes together, and she taught him how to keep warm.
In "One Flu Over the Loud House", Lincoln sacrifices himself to protect Leni from becoming infected with the zombie flu. When she asked why he did it, he tells her that it's because she has a good heart, and she deserved to be saved more than him, before he sneezed on her.
In "No Such Luck", Leni wants to invite Lincoln to her activity, but Lynn interferes, and tells Leni not to bring Lincoln, since he's "bad luck". This causes Lincoln to get an idea, and convinces Leni that his presence might cause something to go wrong, and Leni immediately believes him.
Although Leni and Lori differ from one another in both kindness and intelligence, they are actually very close with each other and they have the same bedroom. They are both enthusiastic about fashion, taking selfies, and talking about boys. Despite this, Lori will often try to control Leni and boss her around. At times, it seems as though Lori takes advantage of Leni's ignorance and naivety, and makes her complete tasks that she should have done herself.
In "Driving Miss Hazy", Lori didn't want Leni to pass her driving test, because then her siblings would ask Leni to drive them places instead of her. Therefore, she would no longer be able to get them to do favors for her. She sabotaged Leni's driving test, but later, she felt extremely guilty for her thoughtless actions and wanted to fix her mistake by helping her prepare for her next test.
In "Picture Perfect", Lincoln walks upstairs to see Leni and Lori taking selfies with each other and laughing.
In "Undie Pressure", she and Lori polish each other's nails.
In "It's a Loud, Loud, Loud, Loud, House", they both teamed up to search for hidden money in their house. They were seen dancing together at the end once the money was found.
In "Brawl in the Family", the two had a very heated fight over buying the same dress, which lead to a lot of friction in the house, and eventually with the other siblings.
In "Back in Black", Leni blames Lori for taking her dress.
In "Vantastic Voyage", they both go over to a car dealership to take use a car to their advantage, and they both manipulate Steve to do so.
In "Party Down", Leni is the only sibling that Lori didn't kick out of her sophisticated party because she acted as Lori wanted.
In "Potty Mouth", Leni and Lori fight over a sweater, which causes them to swear in front of Lily.
The two of them don't interact with each other much, but in "Along Came a Sister", it is shown that she does enjoy listening to her music, and dances while she and Lily used pots and pans as drums, although it was actually a diversion to keep Leni from noticing Frances.
In "House Music", Luna lets Leni sing backup, but the latter is unable to, due to not understanding her role.
In "Come Sale Away", Luna corrects Leni, because she thought that a welcome mat was Lily's blanket.
In "L is For Love", Leni was the first to ask Luna why she wasn't cheering over the fact that she was still in the running of the secret admirer mystery.
Luan gets easily annoyed by Leni's absent mindedness, as much as Leni gets annoyed by Luan's bad jokes. Luan often scares Leni with her plastic spider. Despite this, she and Luan have a good relationship, and they can be seen having fun in some episodes.
In "Linc or Swim", Leni doesn't know the rules of the game "Marco Polo", much to Luan's annoyance and/or dismay.
In "Raw Deal", they were playing together in the lake.
In "Funny Business", Luan revealed she asked Leni to be her her clown assistant, but she failed due to her ditziness.
In "Brawl in the Family", Luan believes that Leni has the right to be mad at Lori.
In "Room With a Feud", Leni and Luan become roommates, they seem to get along at first with Leni laughing at Luan's jokes, but eventually gets annoyed when Leni laughs at every little thing she says.
They don't have many interactions, but they do get along with each other.
In "No Such Luck", Lynn prevents Leni from being affected by Lincoln's "bad luck".
In "Room With a Feud", Leni and Lynn become roommates. They don't agree to share a room, but they get along well, as Lynn uses Leni as a weight lift, while the latter decorates the ceiling.
They don't have any interactions but, like their siblings, Leni gets frightened by Lucy's sudden appearance while the latter gets annoyed by the former's absentmindedness.
In "Linc or Swim", when Leni miscalculated the siblings to 10, Lucy corrected her by saying that they are 11.
In "A Novel Idea", Lucy and Leni both enjoyed ziplining.
They don't have much interaction, but they get along really well.
In "Cover Girls", Lana and Leni dress up as each other.
In "No Such Luck", Leni prevents Lana from being effected by "Lincoln's bad luck".
In "Kick the Bucket List", Leni takes care of her and Lola.
In "Garage Banned", Lana tells Leni about a bad dream she had.
While the two don't have much interaction, they are shown to get along as sisters. Lola tends to get annoyed when Leni acts dumb, and Leni gets scared of getting on Lola's bad side, as Lola once gave her stuff away for free after she accidentally sat on Lola's crown (although this was shown to be a made up story). As the most feminine sisters, they enjoy fashion and in "Homespun", the two were shown to enjoy dressing up in traditional ball gowns during the time of the Wild West, with Leni helping her dress up.
In "Back in Black", Lola accuses Leni of stealing her perfume after noticing that it's gone.
In "Kick the Bucket List", Leni takes care of her and Lana.
Lisa often uses Leni as a test subject to prove her experiments and inventions. The reason of this is because of Leni's poor intelligence. This is evidenced in various episodes like in "Project Loud House", when Lisa changed Leni's blemish cream for an experimental skin pigmentation ointment, turning her skin blue.
Given their completely different IQ levels, Leni's absentmindedness tends to get on Lisa's nerves at times.
She and Leni have a great relationship. After their sister, Luna, Leni seems to spend most of the time with Lily out of all their other siblings.
In "Changing the Baby", Leni tries to implement her interests on Lily, because she had nobody that shares her likes.
In "One Flu Over the Loud House", Leni prevents Lincoln from firing chicken soup at Lily, who was sick.
In "Back in Black", she plays with Lily.
In "Potty Mouth", Leni accidentally swears in front of Lily.
In "Attention Deficit", she helps Leni to apply makeup, without making herself look like a clown.
In "Fed Up", Leni helps him with dinner, and says she has the perfect outfit for the dish they made for dinner.
Clyde and Leni's relationship seems to be pretty good. In the episode "Overnight Success", she asks for his help on a new facial cream she needs to test on before trying it. She also seems to enjoy his company at the sleepover.
In "Along Came a Sister", Clyde recalls one time on Halloween when Leni mistook his spider costume for a real spider, and sprayed him with bug spray. Of course, this was just her arachnophobia getting the better of her.
In "The Whole Picture", she cools Clyde down with a fan when he passes out from seeing Lori and tells him not to say Lori's name so loud.
In "Kick the Bucket List", Leni offers to ride on the teeter-totter with Clyde, but he declines, as he wants to do it with Lincoln by drawing him on a rock.
Leni suffers from arachnophobia, so she kills all spiders she sees. Because she was afraid of Frances, she tried to kill the tarantula. However, when she learned the tarantula belongs to Lincoln's class, she saved Frances from the exterminator, but mainly to save her brother Lincoln. However, just because she saved the tarantula, doesn't mean she got over her arachnophobia.
Leni is good friends with Chaz, as she had him on the guest list for Lori's party in "Party Down". She later sends him the video of Lori having fun with her siblings at another party, prompting him and the other guests to go back to the Loud House.
In "L is For Love", it's implied that Leni has a crush on him, as shown when he helps her pick out a sweater that had matching stripes of two colors she had trouble choosing from. She later sends him a love letter to show her passion for him.
The fact that Leni likes a boy like Chaz shows that she would like a guy, regardless of how he looks on the outside.