Nicholas Holmes

Mikey

Noah

Ernest (voice) • 52 episodes

Professor Dixon

Josh • 1 episodes

Young Frank • 12 episodes

Young Lassie

Hudson Harper (voice) • 1 episodes

Hudson Harper (voice)

Young Johnny • 3 episodes

Joel Hynek • 12 episodes

Ryan

Hudson Harper (voice) • 13 episodes

Bill (voice) • 156 episodes

Andy Landry • 1 episodes

Frederick • 1 episodes

Young Max

1950s Young Mack's Dad

Dooley

Kid #2

Young Norman • 1 episodes

Young Boy • 1 episodes

Jake (voice) • 3 episodes