Mormon is the initial of two protagonists of Mormon and Moroni. He is credited with 3 voice actors, but it is never clear: Christopher Angelos (15), Phil Hubbard (probably young adult or middle-aged), and Joe Lynch (possibly old), but the boy or woman voicing him as a 10-year-old is never credited.
Mormon had earlier also been the narrator of The Savior in America, where he is voiced over by Bob Hart.