Lincoln was born in the limousine of the President of the United States. After Vanzilla broke down, the President's limo picked up the Loud parents on the way to the delivery room. When in the car, Lincoln needed to get out then, so the President tried to deliver Lincoln, but fainted. Lincoln was delivered by the First Lady of the United States.
Lincoln often speaks to the viewers about how he gets around his often-chaotic household, the insane antics of his sisters, and other things he's doing. He has a habit of reading comics, manga, and novels in his underwear. Along with Lucy, he's the quietest of the eleven Loud siblings.
Lincoln is a good-hearted and well meaning person, who is always looking for fun, and thinking about the well being of others. As the family nerd, along with Lisa, Lincoln is an avid fancier of comic books, manga, video games, fantasy and science fiction stories, which are typical interests for a boy his age. His favorite comics are Ace Savvy, David's Castle, and Comix Jokes. His favorite music band is SMOOCH.
He is known to be "the man with a plan", as he is usually elaborating plans with a specific objective, most of them for his own benefits. His plans rarely succeed because of his own selfish and reckless decisions or by his sisters' interference. When he goes too far, he will always find the solution even if that means making himself look like a fool.
He's a very individual person with limited experience of teamwork in contrast to his sisters who cooperate as roommates.
Something that Lincoln has shown is that he is a multi-faceted person. Thanks to a life of living with ten sisters, each with a different personality, he is adapted to them, so he can communicate with any of them, and help them with their activities without a problem. Living in a female dominated family caused him to develop typically feminine traits, like kindness, sensitivity, cooking, beauty pageant knowledge, and sewing skills.
He acts as the "Jack of All Trades" to all of his sisters. He is not as good as his sisters in what they do, but he is competent enough to impress, and help them in what they are doing: such as helping Lucy write her poems, being one step ahead of Luan in her pranks, preventing Lisa's experiment from exploding by adding a chemical, assisting Leni with her fashion designing, and catching Lynn's football in The Loud House episode "Project Loud House". He is also the only one Luna complemented when the Loud House siblings were playing instruments in The Loud House episode "House Music".
"As the middle child and the only boy, Lincoln is often used as a lab rat, or fashion show participant. On the plus side, he gets his own room. Even if it is a converted linen closet. To survive in this house, Lincoln always has to have a plan. With 10 sisters and 1 bathroom, he has to!"
Like most of the characters, Lincoln’s very skinny, and has a large, round head with short white hair, and a large tuft of his hair sticks up. He has an overbite, with a prominent chipped front tooth, noticeable bags around his eyes, and freckles on his cheeks. Like some of his sisters, he also has grayish purple eyelids.
His white hair is a very unique feature that Lincoln has. He's the only one in the family with this hair color, as his sisters are either a brunette, or a blonde (with the exception of Lucy, whose hair is black).
Lincoln usually dresses in an orange polo shirt, blue jeans, gray socks with blue and red stripes, and white sports shoes with red stripes. His sleepwear is an orange nightshirt with matching pants, but sometimes he wears an orange t-shirt and his underwear. His swimsuit is a pair of orange swimming trunks. Sometimes, he reads his comic books in white briefs and socks, but on some occasions, he reads his comic books in his full outfit.
His winter outfit consists of a red coat, with red gloves, a cyan scarf, a brown hat, and brown boots. He also wears brown ice skates.
The colors of Lincoln's shirt and pants (orange and blue) are complementary colors, which are colors directly opposite from each other like green and red and yellow and purple.
Lincoln isn't the only Nicktoons character not to have a consistent voice actor. Arnold from the Hey Arnold! franchise had to change his voice actor six times for exact same reason as Lincoln.
SMOOCH is his current favorite band, but he also likes some of Luna's mix-tapes.
His favorite and regular color is orange, which is the same color of the Nickelodeon logo.