Suggestions by @sonictiger

Spoiler

as "Uatu" in Guardians of The Galaxy: A Big-Bang Origin

Ron Perlman

as Thanos in Guardians of The Galaxy: A Big-Bang Origin

Kate Winslet

as Meredith Quill in Guardians of The Galaxy: A Big-Bang Origin

Edward Norton

as The Collector in Guardians of The Galaxy: A Big-Bang Origin

Genesis Rodriguez

as Nova Centurion Samaya in Guardians of The Galaxy: A Big-Bang Origin

John Cho

as Nova in Guardians of The Galaxy: A Big-Bang Origin

Woody Harrelson

as Yondu Udanta in Guardians of The Galaxy: A Big-Bang Origin

Christopher Judge

as Ronan The Accuser in Guardians of The Galaxy: A Big-Bang Origin

Ciarán Hinds

as Tiamut in Guardians of The Galaxy: A Big-Bang Origin

Laura Harrier

as Nebula in Guardians of The Galaxy: A Big-Bang Origin

Phil LaMarr

as Groot in Guardians of The Galaxy: A Big-Bang Origin

Chris Diamantopoulos

as Rocket Racoon in Guardians of The Galaxy: A Big-Bang Origin

Jason Momoa

as Drax The Destroyer in Guardians of The Galaxy: A Big-Bang Origin

Amber Midthunder

as Gamora in Guardians of The Galaxy: A Big-Bang Origin

Dylan O'Brien

as Star-Lord in Guardians of The Galaxy: A Big-Bang Origin

Wednesday Addams (2022)

as Sonictiger in MyCast Users' Fictional Crushes

Jenna Ortega

as Jamie "Spider" Socorro in Avatar: The Way of Water (2020)

Natalie Holt

as Composer in X-Men: Rise

Kevin Feige

as Producer in X-Men: Rise

The Duffer Brothers

as Director in X-Men: Rise