An Insane High School Surprise

An Insane High School Surprise is an upcoming 2032 american direct-to-video adult computer-animated musical comedy-drama adventure film. It serves as a bridge between the sequel and the third film and the bridge between High Schoolers and its sequel. It is a crossover between Sausage Party, Annoying Orange, South Park, High Schoolers, Ratatouille, WALL-E, Shark Tale and Up.

Plot
D.J. and his friends from High Schoolers sneak into the Sausage Party world and suddenly find the pottymouthed kids of South Park.

Sausage Party

 * Jason Bateman as Toilet Paper, one of the two main protagonists.
 * Seth Rogen as Frank
 * Kristen Wiig as Brenda
 * Danny McBride as Choco
 * Edward Norton as Sammy Bagel Jr
 * Ryan Reynolds as Russell, an lettuce who is one of Collin's lettuce buds
 * Bill Hader as Green, an lettuce who is one of Collin's lettuce buds
 * Josh Keaton as Leaf, an lettuce who is one of Collin's lettuce buds
 * Michael Cera as Barry
 * Jonah Hill as Splash
 * Lauren Miller as Camille Toh
 * Josh Gad as Gummy
 * Scott Underwood as Gum

High Schoolers

 * Selena Gomez as Haley Flanagan, one of the two main protagonists.
 * Freddie Prinze Jr. as Collin Brady (revived as a lettuce)
 * Anne Hathaway as Lagan Fuller
 * Seth Rogen as David Jones 'D.J' Myrick
 * Kristen Wiig as Ashleigh Jefferys; Haley Grace Malone
 * Kate Winslet as Morgan Bendall; Heather Adams
 * Nicole Oliver as Elisha Preston; Jasmine Todd (Ball previously voiced Jasmine.)
 * Grey DeLisle as Audrianna Flanagan
 * Zoe Saldana as Clara Corona (revived by Barry)

Shark Tale

 * Will Smith as Oscar
 * Jack Black as Lenny
 * Reene Zellweger as Angie
 * Angelina Jolie as Lola
 * Robert De Niro as Don Lino
 * Martin Scorsese as Sykes
 * Vincent Pastore as Luca
 * Doug E. Doug as Bernie
 * Ziggy Marley as Ernie
 * Dominic Chianese as Don Feinberg

Ratatouille

 * Patton Oswalt as Remy
 * Lou Romano as Linguini
 * Janeane Garofalo as Colette Tatou
 * Brian Dennehy as Django
 * Peter Sohn as Emile
 * Brad Garrett as Gusteau

WALL-E

 * Ben Burtt as WALL-E and M-O
 * Elissa Knight as EVE

South Park

 * Trey Parker as Stan Marsh / Eric Cartman / Mr. Garrison / Mr. Mackey / Randy Marsh
 * Matt Stone as Kyle Broflovski / Kenny McCormick / Gerald Broflovski
 * Mona Marshall as Liane Cartman / Sheila Broflovski / Sharon Marsh / Carol McCormick

Annoying Orange

 * Dane Boedigheimer as Orange, Pear, Midget Apple and Marshmallow
 * Justine Ezarik as Passion Fruit
 * Bobby Jennings as Grapefruit
 * Harland Williams as Apple

Up

 * Ed Asner as Carl Fredricksen
 * Jordan Nagai as Russell
 * Bob Peterson as Dug
 * Pete Docter as Kevin