Robert Downey Jr as Tony Stark
Mackenzie Foy as Ella Louisa Adler/Stark
Gwyenth Paltrow as Pepper Potts
Charlize Theron as Ruby Adler (Ella's mother)
Chad Micheal Murray as Charles Adler (Ella's Stepdad)
Jon Favreau as Happy Hogan
Terrence Howard as James "Rhodey" Rhodes
Samuel L. Jackson as Nick Fury
Clark Gregg as Agent Phil Coulson
Paul Bettany as J.A.R.V.I.S (Just A Rather Very Intelligent System)