Special Guest Stars Gil Birmingham as Sheriff Bishop Guest Stars David Cubitt as Ted Pownall Sarah Jane Redmond as Elaine Pownall Patrick Gallagher as Dr. Abbott Brian Anthony Wilson as Captain Sean McClure Toby Levins as Donnie Price Ntare Guma Mbaho Mwine as Professor Aldon Decker Co Starring Curtis Lum as Calvin David Kaye as Jerry Chad Rook as Chris Mueller Andrew Jenkins as Doug Pownall Anthony Harrison as Admiral Harrison Georgia Bradner as College Girl Malcolm Craig as Kid #1 Makena Kristjanson as Kid #2 Naiah Cummins as Teacher Jaedon Siewert as Narrator Jacqueline Burrows as Girl at Marine Center Preston Drabble as Toddler Devina Briggs as Young Mermaid Stewart Iguidez as Photographer Megan Hui as Nurse Natalie Farrow as Girl #1 Thomas Glukler as Young Charles Claire Margaret Corlett as Sister Jason Asuncion as Anthony Brian Lui as Guy #1 Latonya Williams as Friend
