Alaina Gleen: World's Most Wanted

Alaina Gleen: World's Most Wanted is an upcoming American 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, Katherine Langford, Ben Schwartz, Sam Rockwell, Awkwafina, Sterling K. Brown, Danny Trejo, Kelly Marie Tran, and Jake Johnson. It is scheduled to be released on July 23, 2021 by 20th Century Studios.

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

Voice cast

 * 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 Cortez
 * Andy Samberg as Eddie Elephant
 * Ben Schwartz as Benny Bear
 * Jake Johnson as Chief Kyle Brooks
 * Katherine Langford as Peggy Carson
 * Dwayne Johnson as Spy Squirrel
 * Maya Rudolph as Sally Gleen
 * Danny McBride as Roger Rumpkins
 * Kenan Thompson as Officer Bernie
 * Wanda Sykes as Betty Gleen

The Imaginary Resistance

 * Sterling K. Brown as Dr. Everett McCoy, a doctor who is the creator of the Imaginary Resistance
 * Kelly Marie Tran as Melody McCoy, Everett's daughter.
 * Sam Rockwell as King Duke, the leader of the Imaginary Resistance.
 * Danny Trejo as Hugo the Hare, a hare cowboy who is one of the members of the Imaginary Resistance
 * Awkwafina as Firewest the Lizard, a fire-breathing lizard who is one of the members of the Imaginary Resistance.
 * Rhys Darby, Kevin Fowler, Colin Moody, and Kate Abbott as Fred, Frank, Marvin, and Moxie

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 interest 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, Jake Johnson 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. By August 14, 2020, Awkwafina, Danny Trejo, Sterling K. Brown, and Kelly Marie Tran joined the cast.

Because of the COVID-19 pandemic, production of the film shifted to people working at home.

In September 2020, Katherine Langford joined the cast, making her animation debut. Also in that same month, Chris Pratt later joined the cast. On January 22, 2021, Sam Rockwell was later cast as King Duke.

Music
In July 2020, Henry Jackman will return to score the fourth film, having previously scored the third film.

Release
The film is scheduled to be released on October 22, 2021 by 20th Century Studios in 3D, Dolby Cinema, and IMAX. Originally, it had been set for an October 8, 2021 release. On July 23, 2020, the film was moved up to November 5, 2021 as a result of Disney's updated film release slate due to the 2019–20 coronavirus (COVID-19). On September 23, 2020, the film was then rescheduled for October 29, 2021 as a result of Disney's updated slate. On November 5, 2020, the film was pushed a week back to October 22, 2021. On January 22, 2021, the film was pushed back three months earlier to July 23, 2021, with Ron's Gone Wrong taking its October slot.

The film will be accompanied by The Last Donut, a short film based on The Simpsons franchise.

Marketing
A teaser trailer was officially released online on 20th Century Studios' YouTube channel on December 11, 2020.