Mortimer Chauncey Smith Sr. is the titular co-protagonist of the American animated television series Rick and Morty. Created by Justin Roiland and Dan Harmon, and voiced by the former for the first six seasons of the series, followed by Harry Belden beginning with the seventh season, Morty is a 14-year-old boy loosely inspired by Michael J. Fox's Marty McFly from Back to the Future. Morty is known for his awkward, anxious, second-guessing, doubtful personality, and low sense of self-esteem; the character has been critically well received. He is the good-natured and impressionable grandson of Rick Sanchez, the son of Jerry and Beth Smith, the younger brother of Summer Smith, and the father of Morty Jr., Thoolie, Naruto, and Maria Smith. He is also known to be easily manipulated. In September 2026, Jaeden Martell portrayed Morty in a series of promotional interstitials for the series.