Suggestions by @iamanerd

Cree Summer

as Ghost in Captain Action

Jeremy Renner

as X in Captain Action

Taika Waititi

as Director in Captain Action

Billy Crystal

as Skeletor in Injustice vs. Masters of the Universe

Chris Hemsworth

as Prince Adam in Injustice vs. Masters of the Universe

MatPat

as Writer in Captain Action

Kevin Feige

as Producer in Captain Action

Megan Fox

as Lady Action in Captain Action

John Krasinski

as Captain Action in Captain Action

Dave Franco

as Robin in Batman: Immortal

Chris Pratt

as Emmett Brickowski in The LEGO Indiana Jones Movie

Keith Ferguson

as Han Solo in The LEGO Indiana Jones Movie

Harrison Ford

as Henry Jones Sr. in The LEGO Indiana Jones Movie

Maulik Pancholy

as Short Round in The LEGO Indiana Jones Movie

Grey DeLisle

as Marion Ravenwood in The LEGO Indiana Jones Movie

Eminem

as Sherluck Homey in The Adventures of Sherluck Homey and Dr. Whatsup

James Corden

as Dr. Whatsup in The Adventures of Sherluck Homey and Dr. Whatsup

Skai Jackson

as Young Terk in Tarzan

Gal Gadot

as Jennifer Walters in Cho: The Incredible Hulk

Jeremy Jordan

as Armadeus Cho in Cho: The Incredible Hulk