Lincoln Marie "Linc" Loud is the protagonist of The Loud House. He is the 11-year-old middle child and only son of the eponymous family. He is an avid reader of comic books, and frequently speaks to the viewer on how he gets around the chaotic conditions of the household by finding creative solutions to his problems. He is in the fifth grade and likes hanging out with his four best friends; Clyde, Zach, Liam and Rusty.
Lincoln has appeared in all episodes of The Loud House series to date, but according to a recent interview, there will be some future episodes in which he doesn't appear.
Lincoln Loud isn't the first protagonist of a Nicktoons series to have to change between voice actors due to the child hitting puberty. Arnold from Hey Arnold! also had to switch voice actors around five times due to their actors also changing voices from puberty.