Suggestions by @legoking516

Nicholas Hoult

as Marshmallow in IF (2034)

Damon Wayans Jr.

as Slime in IF (2034)

Ray Romano

as Art Teacher in IF (2034)

Colin Jost

as Banana in IF (2034)

Elijah Wood

as Flower in IF (2034)

Drake Bell

as Ice in IF (2034)

Mark Wahlberg

as Spaceman in IF (2034)

Maia Mitchell

as Unicorn in IF (2034)

Madelyn Cline

as Bubble in IF (2034)

Danny Glover

as Lewis in IF (2034)

Laura Marano

as Blossom in IF (2034)

Josh Duhamel

as Blue in IF (2034)

Jessica Lange

as The Woman Upstairs in IF (2034)

Maddie Ziegler

as Bea's mother in IF (2034)

Paul Walter Hauser

as Jeremy in IF (2034)

Mekia Cox

as Janet in IF (2034)

Mateo Saavedra

as Benjamin in IF (2034)

Gillian Anderson

as Bea's grandmother in IF (2034)

Nicholas Hoult

as Bea's father in IF (2034)

Zac Efron

as Cal in IF (2034)