Suggestions by @luxlenchner

David Tennant

as The Wolfman in Dark Universe

Benedict Cumberbatch

as The Frankenstein's Monster in Dark Universe

Jack Black

as R.L. Stine in Goosebumps

Mark Hamill

as Slappy The Dummy in Goosebumps

Noah Jupe

as Champ in Goosebumps

Owen Vaccaro

as Zach Cooper in Goosebumps

Millie Bobby Brown

as Hannah in Goosebumps

Brad Garrett

as Eeyore in Christopher Robin

Justin Roiland

as Piglet in Christopher Robin

Alan Tudyk

as Tigger in Christopher Robin

Jim Cummings

as Winnie the Pooh in Christopher Robin

Cameron Diaz

as Gozer in Ghostbusters: Reborn

J.K. Simmons

as Lenny Clotch in Ghostbusters: Reborn

James Franco

as Walter Peck in Ghostbusters: Reborn

Charlie Day

as Louis Tully in Ghostbusters: Reborn

Elizabeth Banks

as Dana Barrett in Ghostbusters: Reborn

Jenny Slate

as Janine Melnitz in Ghostbusters: Reborn

Donald Glover

as Winston Zeddemore in Ghostbusters: Reborn

Seth Rogen

as Egon Spengler in Ghostbusters: Reborn

Bill Hader

as Raymond Stantz in Ghostbusters: Reborn