Suggestions by @ringothedrummer

Spoiler

as “Lord President” in Doctor Who: Mastermind

Sylvester McCoy

as The TARDIS Computer in Doctor Who: Mastermind

Hunter Schafer

as Molly in Doctor Who: Mastermind

Brandon Perea

as Matt Brown in Doctor Who: Mastermind

Nicholas Briggs

as The Daleks in Doctor Who: Mastermind

Julian Bleach

as Davros in Doctor Who: Mastermind

Louise Jameson

as Leela in Doctor Who: Mastermind

Stephen Merchant

as K9 in Doctor Who: Mastermind

Stephanie Hsu

as Robin Caldwell in Doctor Who: Mastermind

Jodie Comer

as The Master in Doctor Who: Mastermind

Emma D'Arcy

as The Doctor in Doctor Who: Mastermind

Dylan O'Brien

as Waluigi in Super Mario Bros.

Matt Wood

as Wario in Super Mario Bros.

Jason Momoa

as Bowser in Super Mario Bros.

Hunter Schafer

as Princess Peach in Super Mario Bros.

Dominic Sessa

as Luigi in Super Mario Bros.

Michael Gandolfini

as Mario in Super Mario Bros.

John Lithgow

as Earl Partridge in Magnolia

Emma Stone

as Linda Partridge in Magnolia

J.K. Simmons

as Jimmy Gator in Magnolia