Sonic & Tails: Highway Detectives

Sonic & Tails: Highway Detectives is an upcoming American animated action-adventure comedy direct-to-video film based on the video game franchise published by Sega. The film is directed by Takashi Iizuka and features writers such as Adam Bryce Thomas, Ian Flynn, Ken Penders, Pat Casey, Jeff Fowler, and Josh Miller. The film is traditionally animated, being art directed by Yuji Uekawa.

The film is scheduled to be released on December 28, 2021. Upon release it received critical acclaim, being praised for its animation, direction, elaborate set pieces, character design, story, humor and soundtrack. It also enjoyed great commercial success, with over seven million copies sold within a week of its release and 22.5 million by Christmas 2024.

Synopsis
Set in between the events of Sonic the Hedgehog 4: Episode II and Sonic Adventure, Sonic and his companion Tails are called in to investigate a series of Chao disappearances and a mysterious introduction of unknown robot masters.

Cast

 * Ryan Drummond as Sonic the Hedgehog
 * Corey Bringas as Miles "Tails" Prower
 * Michael McGaharn as Knuckles the Echidna
 * Jennifer Douillard as Amy Rose
 * Deem Bristow as Dr. Eggman
 * Lani Minella as various city announcers
 * Jon St. John as the Robot Master

Trivia

 * While Dr. Eggman does not physically appear, his voice is heard on an intercom of the Robot Masters lair. Eggman's dialogue in the film is edited from previous recordings of Bristow.
 * The voice Corey used for Tails was not naturally produced by him since his voice is too deep. To achieve the effect of Tails' voice, Corey used the same technique as he did when he voiced Tails in his primetime but with a childlike inflection. The recorded audio is then edited with Pro Tools, and then the sync is pitched up to sound like that of a eight year old.