Hero's Son and Rival's Nephew

Hero's Son and Rival's Nephew is an upcoming 2018 American animated musical comedy drama film starring Mickey Mouse and directed by Brad Bird. The film will be released in theaters on June 21, 2018 produced by Walt Disney Animation Studios and distributed by Walt Disney Pictures.

Cast

 * Bret Iwan as Mickey Mouse, the hero and most loved citizen of Mouseton.
 * John Sturtridge as Elmer Mouse, a young boy mouse who becomes Mickey's adopted son.
 * Russi Taylor as Minnie Mouse, Mickey's ever-loving girlfriend who understands Elmer and brought him to Mickey to raise.
 * Maurice LaMarche as Mortimer Mouse, Mickey's longtime rival who is constantly after Minnie's affections and hurting Elmer on the street.
 * Bill Farmer as Pluto, Mickey's beloved pet dog.
 * Kaitlyn Maher as Maia Pfeffer, a girl mouse who falls in love with Elmer at first sight on their first day in Mouseton.
 * Gavin MacIntosh as Walter Cunningham, a pre-teenage mouse and Mortimer's nephew who wants Maia, who does not like him. The conflict makes him Elmer's sworn enemy.
 * Thomas Bleasby will do his singing voice.
 * Zach Hammer as Marius Kentis, an older friend of Elmer's who is allowed to drive.
 * Jim Cummings as Peter Pete, Mickey's arch rival who has a hatred for Mortimer but is on top of a Wanted list.
 * R.D. Robb as Gangus Kahn, a member of Walter Cunningham's gang, the Kovacs.
 * Josh Gad as Dunbar Shoemeyer, a friend of Elmer and Marius' who likes to fish play antics at times.
 * Davey Towers as Artie Holden, a smart friend of Marius' who is an expert in chemistry.
 * Daniel Stern as Martin Plymouth, the dumbest member of Walter Cunningham's gang, the Kovacs, who is never listening.
 * Liam Neeson as Principal Chesney, Elmer's understanding school principal who would be delighted to give Walter detention for misbehavior.

Music
The score for the film will be composed and conducted by Thomas Newman and performed by the London Symphony Orchestra, featuring choral performances by the London Voices.

Track Listing
 * 1) Main Title (Thomas Newman)
 * 2) Last Day of School (Pomp and Circumstance, Edward Elgar)
 * 3) Elmer's Wondrous World (Thomas Newman)
 * 4) Conflict with Walter Cunningham
 * 5) Bad Night (Newman, piano and cello solo by Jon Schmidt and Steven Sharp Nelson)
 * 6) Meeting Mickey (Thomas Newman)
 * 7) Evening in the Park (Thomas Newman)

In other languages

 * Brazil: Filho do Herói e Sobrinho do Rival ("Son of the Hero and Nephew of Rival")