Suggestions by @kylewhite

James Gunn

as Writer in James Gunn's Mars Attacks!

Grant Gustin

as Jason Stone in James Gunn's Mars Attacks!

Taraji P. Henson

as Louise Williams in James Gunn's Mars Attacks!

Joseph Mazzello

as Press Secretary Jerry Ross in James Gunn's Mars Attacks!

John C. Reilly

as Glenn Norris in James Gunn's Mars Attacks!

John Goodman

as Glenn Norris in James Gunn's Mars Attacks!

Pom Klementieff

as Martian Girl in James Gunn's Mars Attacks!

Dee Bradley Baker

as Martians in James Gunn's Mars Attacks!

Elizabeth Olsen

as Nathalie Lake in James Gunn's Mars Attacks!

Benedict Cumberbatch

as Professor Donald Kessler in James Gunn's Mars Attacks!

Tom Hiddleston

as Professor Donald Kessler in James Gunn's Mars Attacks!

Charlie Day

as Rude Gambler in James Gunn's Mars Attacks!

Terry Crews

as Byron Williams in James Gunn's Mars Attacks!

Sophia Lillis

as Taffy Dale in James Gunn's Mars Attacks!

James Gunn

as Director in James Gunn's Mars Attacks!

Harry Connick Jr.

as Famous Singer in James Gunn's Mars Attacks!

Michael Bublé

as Famous Singer in James Gunn's Mars Attacks!

Bruce Dern

as General Decker in James Gunn's Mars Attacks!

Karen Gillan

as Nathalie Lake in James Gunn's Mars Attacks!

Kathryn Hahn

as Barbara Land in James Gunn's Mars Attacks!