Suggestions by @marvelkids

Steve Blum

as Annihilus in Fantastic Four Heroes Return

Sumalee Montano

as Lucia Von Bardas in Fantastic Four Heroes Return

Tom Kenny

as Impossible-Man in Fantastic Four Heroes Return

Keith David

as Puppet Master in Fantastic Four Heroes Return

Travis Willingham

as Namor in Fantastic Four Heroes Return

Grant George

as Ant-Man in Fantastic Four Heroes Return

Travis Willingham

as Super-Skrull in Fantastic Four Heroes Return

Stan Lee

as Willie Lumpkin in Fantastic Four Heroes Return

Gabriel Mann

as Bruce Banner in Fantastic Four Heroes Return

Fred Tatasciore

as The Hulk in Fantastic Four Heroes Return

Masasa Moyo

as Alicia Masters in Fantastic Four Heroes Return

Phil Morris

as Doctor Doom in Fantastic Four Heroes Return

Billy West

as H.E.R.B.I.E. in Fantastic Four Heroes Return

Kevin Michael Richardson

as The Supreme Intelligence in Fantastic Four Heroes Return

Jonathan Adams

as Ronan The Accuser in Fantastic Four Heroes Return

Peter Onorati

as The Thing in Fantastic Four Heroes Return

Jason Spisak

as Human Torch in Fantastic Four Heroes Return

Nicole Sullivan

as The Invisible Woman in Fantastic Four Heroes Return

George Newbern

as Mister Fantastic in Fantastic Four Heroes Return

Marvel Animation

as Studio in Fantastic Four Heroes Return