Dean Wendt as Barney (voice)

Carey Stinson as Barney

Julie Johnson as Baby Bop (voice)

Jeff Ayers as Baby Bop

Montana Tucker as Serena the Mermaid

Patty Wirtz as BJ (voice)

Alexandrea Hairston as Princess Zulica (Zulie)

Kyle Nelson as BJ

Dylan Crowley as Alex

Carina Conti as Megan

Jennifer Skidmore as Lily The Librarian

Robert Sky McDougall as Maynard The Magician

Nicholas J. Leinbach as Horrible Harry The Giant

Desi Romero as King

Nicola Lambo as Queen

Olgia Campbell as Matilda The Hun

Tonya Thompson as Mrs. Wilson