Lincoln Albert Loud is the main character of The Loud House and a supporting character in the spin-off series, The Casagrandes.

Lincoln is slightly taller than Lucy, but shorter than Lynn.

He has short white hair, and is the only one with white hair within his immediate family, he additionally has an upward facing cowlick on his left and two upward facing hair strands on his right, large eye bags, freckled cheeks, two chipped, and overbiteing front teeth, one strand of chest hair and following "The Whole Picture," one mustache hair.

He wears an orange polo shirt, blue jeans, gray socks with blue and red stripes, and white sports shoes with three red stripes on each side.

His sleepwear is usually an orange nightshirt with matching pants, an occasionally an orange t-shirt and underwear. His swimsuit is a pair of orange swimming trunks. His winter outfit consists of a red coat with red gloves, a brown hat, and brown boots, brown ice skates when ice skating. And he usually reads his comic books in white briefs and socks, an occasionally in his full outfit.

Lincoln's second-oldest sister, Leni, is quite fond of his white hair. She says it reminds her of their maternal grandfather, and gets defensive if anybody mocks Lincoln for it