KenanThompson, 1996-2000. KenanThompson had little to show for his Nickelodeon fame at the end of his years of work. The actor appears in Demi Lovato's new documentary, Child Star. There ...
And while hundreds of cast members have come and gone, one cast fixture is KenanThompson, who has been on “SNL” since 2003, making him the longest-tenured cast member in the show’s history.