Maddy
Barry
Shelby
Josh
Chet
Kyle
Big Dave
Travis
Ashley
David Hasselhoff
Mr. Goodman
Andrew
Clayton
Mo
Bethany
Freckled Boy (as Matthew Lintz)
Young Mother
Rochelle
Dawn
Hysteric / Stocky Woman
Fearful Woman
Waterpark Patron
Bimbo Lifeguard
Kiki
Cheerleader (archive footage) (uncredited)
Bloody Bather (uncredited)
Staring Kid (uncredited)
Victim (uncredited)
Lifeguard (uncredited)
Swimmer (uncredited)
Wet T-shirt Girl (uncredited)
Lizzie the Lifeguard (uncredited)
Saved Dead Woman (uncredited)
Bather (uncredited)
Water Park Patron (uncredited)
Male Staffer (uncredited)
Massacre victim (uncredited)
Josh's Mom (uncredited)
Nurse (uncredited)
Water Park Monkey Man (uncredited)
Deputy Fallon (uncredited)
Hospital Patient (uncredited)
Bite Victim's Father (uncredited)
Featured Extra (uncredited)
Boy discovering corpses (uncredited)
Bikini Girl (uncredited)
Bella (uncredited)