Suggestions by @SpiderSonicPrime

Misty Lee

as May Parker in Happy Birthday, Spider-Man! (Animated Special)

Nancy Linari

as May Parker in Happy Birthday, Spider-Man! (Animated Special)

Alanna Ubach

as Liz Allan in Happy Birthday, Spider-Man! (Animated Special)

Graham Phillips

as Harry Osborn in Happy Birthday, Spider-Man! (Animated Special)

Scott Porter

as Harry Osborn in Happy Birthday, Spider-Man! (Animated Special)

David Boat

as Thing in Happy Birthday, Spider-Man! (Animated Special)

Matthew Yang King

as Human Torch in Happy Birthday, Spider-Man! (Animated Special)

Kari Wahlgren

as Invisible Woman in Happy Birthday, Spider-Man! (Animated Special)

Wally Wingert

as Mr. Fantastic in Happy Birthday, Spider-Man! (Animated Special)

Erica Lindbeck

as Captain Marvel in Happy Birthday, Spider-Man! (Animated Special)

Grey DeLisle

as Captain Marvel in Happy Birthday, Spider-Man! (Animated Special)

Josh Keaton

as Ant-Man in Happy Birthday, Spider-Man! (Animated Special)

Phil LaMarr

as War Machine in Happy Birthday, Spider-Man! (Animated Special)

James C. Mathis III

as War Machine in Happy Birthday, Spider-Man! (Animated Special)

Mark Hildreth

as Quicksilver in Happy Birthday, Spider-Man! (Animated Special)

Kate Higgins

as Scarlet Witch in Happy Birthday, Spider-Man! (Animated Special)

David Kaye

as Vision in Happy Birthday, Spider-Man! (Animated Special)

Bumper Robinson

as Falcon in Happy Birthday, Spider-Man! (Animated Special)

James C. Mathis III

as Black Panther in Happy Birthday, Spider-Man! (Animated Special)

Kari Wahlgren

as Wasp in Happy Birthday, Spider-Man! (Animated Special)