Halloween Is Grinch Night!

Halloween Is Grinch Night! (also known as Dr. Seuss' Halloween Is Grinch Night!) is a American 3D computer-animated Halloween comedy film produced by Illumination. It is the prequel to the 2018's film The Grinch, which was loosely based on Dr. Seuss' book of How the Grinch Stole Christmas!.

Voice cast

 * Benedict Cumberbatch as The Grinch
 * Jeremy Ray Taylor as Euchariah Who, a 12-years-old resident of Whoville.
 * Catherine O'Hara as Tina Who, Euchariah's mother
 * Nathan Fillion as Harry Who, Euchariah's father
 * Tara Strong as Sassy Who, Euchariah's little sister
 * Phyllis Smith as Mariah Who, Euchariah's grandmother
 * Eugene Levy as Josiah Who, Euchariah's grandfather
 * Max Charles as Greg, Euchariah's best friend
 * Laraine Newman as Greg's mother
 * Kenan Thompson as Bricklebaum, a jolly citizen of Whoville who is Fred's owner.
 * Angela Lansbury as Mayor McGerkle, the elderly Mayor of Whoville.
 * Pharrell Williams as the Narrator

Trivia

 * The Grinch is the fifth Illumination film to become a franchise, after Despicable Me, The Secret Life of Pets, Minions and Sing.
 * This is the first Illumination's Halloween film.