Lincoln is the middle child and only son of the now Loud Industries Senior Executive Vice President, Lynn Loud Sr. and dental assistant, Rita Loud and is a member of the prominent Loud family of Royal Woods, MI. His most annoying habit is reading comics, manga, and novels in his underwear and like Richard, Lincoln lives in an often-chaotic household with ten sisters. He is the second youngest shareholder of Loud Industries after Lisa M. Loud.
Lincoln is very charismatic and enthusiastic as he was in The Loud House, however, he has become more selfless and kindhearted. He has devoted himself to God and frequently prays to him. He enjoys comic books, manga, and novels and is always looking for fun as he did in his previous show.
Unlike what he was in The Loud House, Lincoln has become as popular as Richard, having acquired wealth from his father's promotion to being the Loud Industries business executive and he had been elected student body President of Richard's school.
Lincoln somewhat resembles his distant relative, Richard, unlike Richard, Lincoln has short white hair, and a large tuft of his hair sticks up and so does two strands of his hair. He has an overbite with a prominent chipped front tooth, and freckles on his cheeks. He also has chest hair.
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.
It was revealed in "A Lavish Birthday Party" that Lincoln is named after Richard's grandfather, Richard Loud Jr., whom Lincoln's father, Lynn Sr., looked up to as a father figure. Richard Jr.'s middle name is Lincoln.
Lincoln and Ronnie Anne are the first interreligious couple in a Loud House fanon series, Lincoln is a Protestant and Ronnie Anne is a Catholic.