• Zack (voiced by Thomas Albritton in seasons 1-2 and Eli Paul in season 3) is a 7-year-old boy and the protagonist of the show. His best friends are Quack and Kira. • Quack (vocal effects provided by Nick Baker) is a blue
mallard who is Zack's best friend. Despite the fact that he can't speak, everybody can understand his quacking. • Kira (voiced by Madison Zamor) is an 8-year-old girl with curly hair who can fix anything with a little creativity and various tools. • Hop (voiced by Maria May in seasons 1-2 and Clancy Penny in season 3) and Skip (voiced by Regan Lutz) are a pair of very acrobatic squirrel sisters. Hop is pink while Skip is purple and is the smaller of the two. • Fluffy (voiced by Jesse Ray Sheps) is a wide-eyed young brown hedgehog. • Belly-Up (voiced by
Colin McFarlane) is an expert and lovable green bullfrog. ==Notes==