Alaina Gleen: World's Most Wanted

Alaina Gleen: World's Most Wanted is an upcoming American 3D computer-animated adventure comedy film produced by 20th Century Animation. It is the fourth and final installment in the Alaina Gleen CGI reboot franchise, following 2017's Alaina Gleen: Imaginary Vacation. Written and directed by series creator Thalia Ward and co-directed by Thurop Van Orman and written by Matt Lieberman, Peter Ackerman, Eyal Podell, and Jonathon E. Stewart.

It will feature the voices of Kristen Bell, Bill Hader, Zac Efron, Taylor Swift, Jim Carrey, Andy Samberg, Maya Rudolph, Danny McBride, Dwayne Johnson, Katie Crown, and Wanda Sykes reprising their roles from the previous films, joined by newcomers Rachel Bloom, Ben Schwartz, Chris Pratt, Awkwafina, James Corden, Danny Trejo, Kelly Marie Tran, and Jake Johnson. It is scheduled to be released on November 5, 2021 by 20th Century Studios.

Plot
When Alaina Gleen and Max Hat get framed for stealing a historic gem, the two must team up with a young police girl named Bianca and Alaina's friends to embark on a wild and dangerous journey.

Voice cast
Additionally, Chris Pratt, Awkwafina, James Corden, Danny Trejo, Kelly Marie Tran, and Jake Johnson have been cast in undisclosed roles.
 * Kristen Bell as Alaina Gleen
 * Bill Hader as Max Hat
 * Zac Efron as Jason Baxter
 * Taylor Swift as Lucy Jones
 * Jim Carrey as Professor Hinkle Higgins
 * Rachel Bloom as Officer Bianca
 * Andy Samberg as Eddie Elephant
 * Danny McBride as Roger Rumpkins
 * Maya Rudolph as Sally Gleen
 * Ben Schwartz as Benny Bear
 * Kenan Thompson as Officer Bernie
 * Dwayne Johnson as Spy Squirrel
 * Katie Crown as Jenny McNulty
 * Sofía Vergara as Evelyn Elephant
 * Wanda Sykes as Betty Gleen
 * Mel Brooks as Hank Hat

Production
On the possibility of a potential sequel, in March 2018, Thalia Ward, the creator of the series, stated that a fourth installment is already being considered. Six months later, Fox confirmed that the fourth installment is already moving forward from Fox Animation. Kristen Bell and Bill Hader have expressed interests in reprising their roles in the fourth film. On March 26, 2019, it was reported that Thurop Van Orman (creator of The Marvelous Misadventures of Flapjack and the director for the then-upcoming The Angry Birds Movie 2) is in talks to co-direct the fourth installment with Ward. Later that day, Orman confirmed in his interview that he will indeed co-direct the fourth installment. At the 2019 Annecy International Animated Film Festival in June, further more details including the plot were announced with series creator Thalia Ward revealed that that the film will be released on October 8, 2021, with Bell, Hader, Zac Efron, Taylor Swift, Jim Carrey, and Andy Samberg reprising their previous roles, as Alaina Gleen, Max Hat, Jason Baxter, Lucy Jones, Professor Hinkle Higgins, and Eddie Elephant respectively, with Rachel Bloom and Ben Schwartz joining them, while Matt Lieberman, Peter Ackerman, Eyal Podell and Jonathon E. Stewart would rewrite Ward's screenplay. Ward also expressed hope that it would be a better film than the previous installment. Fox announced in November 2019 that the film officially began production. By July 23, 2020, the release date was pushed back a month later on November 5, 2021 as a result of Fox's updated slate due to the 2019–20 coronavirus pandemic's impact on the film industry.

Music
In July 2020, Henry Jackman will return to score the fourth film, having previously scored the third film with Lorne Balfe joining him.

Release
The film is scheduled to be released on November 5, 2021 by 20th Century Studios. Originally, it had been set for a October 8, 2021 release. On July 23, 2020, the film was moved up to November 5, 2021 as a result of Fox's updated film release slate due to the 2019–20 coronavirus (COVID-19).