Katherine McNamara as Hope Lily Stark (nee Potter)/Hope Maria Stark (nee Jarvis)
Robert Downey Jr as Anthony 'Tony' Stark
Scarlett Johansson as Natasha Romanoff
Jeremy Renner as Clint Barton
Chris Evans as Steve Rogers
Mark Ruffalo as Bruce Banner
Chris Hemsworth as Thor Odinson
Rest of the MCU cast as themselves.
Karen Gillan as Lily Jane Potter
Aaron Taylor-Johnson as James Fleamont Potter
Phoebe Tonkin as June Lily Lupin-Black
Emily Blunt as Jane Lily Potter
Daniel Radcliffe as Harry James Potter
Ben Barnes as Sirius Orion Black III
Andrew Garfield as Remus John Lupin
Rest of the HP cast as themselves.