Suggestions by @taidog

Colin Farrell

as Tony Stark in Avengers Infinity Gauntlet

Rosario Dawson

as Terraxia in Avengers Infinity Gauntlet

Zac Efron

as Steve Rodgers in Avengers Infinity Gauntlet

Kim Soo-hyun

as Namor in Avengers Infinity Gauntlet

Naomi Scott

as Nebula in Avengers Infinity Gauntlet

William Fichtner

as Mephisto in Avengers Infinity Gauntlet

Edward Furlong

as Doctor Strange in Avengers Infinity Gauntlet

Jeff Bennett

as Silver Surfer in Avengers Infinity Gauntlet

Peter Dinklage

as Pip The Troll in Avengers Infinity Gauntlet

Liam Hemsworth

as Adam Warlock in Avengers Infinity Gauntlet

Kat Dennings

as Lady Death in Avengers Infinity Gauntlet

Jack Black

as Thanos in Avengers Infinity Gauntlet

Dove Cameron

as Gwen Stacy in Characters who have not appeared, but should appear, in the MCU

Tyler Hoechlin

as Master Of The World in Alpha Flight

Courtney Eaton

as Aurora in Alpha Flight

Peter Dinklage

as Puck in Alpha Flight

Owen Teague

as Guardian in Alpha Flight

Lance Lim

as Northstar in Alpha Flight

Andy Serkis

as Sasquatch in Alpha Flight

Tom Cavanagh

as Joker in Suicide Squad (2011)