Suggestions by @aidanvaughan1

Robert Hays

as Iron Man in Iron Man: Demon in a Bottle (2013)

Clancy Brown

as Captain George Stacy in The Amazing Spider-Man Earth-616 animated fancast

Ed Asner

as J. Jonah Jameson in The Amazing Spider-Man Earth-616 animated fancast

Mary Kay Bergman

as Gwen Stacy in The Amazing Spider-Man Earth-616 animated fancast

Gary Imhoff

as Harry Osborn in The Amazing Spider-Man Earth-616 animated fancast

Patrick Labyorteaux

as Flash Thompson in The Amazing Spider-Man Earth-616 animated fancast

Rodney Saulsberry

as Joseph “Robbie” Robertson in The Amazing Spider-Man Earth-616 animated fancast

Christopher Daniel Barnes

as Peter Parker/The Amazing Spider-Man in The Amazing Spider-Man Earth-616 animated fancast

Sara Ballantine

as Mary Jane Watson-Parker in The Amazing Spider-Man Earth-616 animated fancast

Linda Gary

as Aunt May in The Amazing Spider-Man Earth-616 animated fancast

Brian Keith

as Uncle Ben in The Amazing Spider-Man Earth-616 animated fancast

Majel Barrett

as Anna Watson in The Amazing Spider-Man Earth-616 animated fancast