Cartoon Network/The Avengers (movie)

The cast of Cartoon Network shows as earth's mightiest superheroes.

Starring...
Numbuh 1 as Captain America

Dexter as Iron Man

Grim Reaper as Thor

Ben 10 (young) as Bruce Banner (Gray Matter when smart)

Fourarms as the Hulk (Wildmutt when uncontrollable)

Numbuh 5 as the Black Widow

Numbuh 2 as Hawkeye

Numbuh 274 as Nick Fury

The Bogeyman as Loki

Numbuh 4 as Agent Phil Coulson

Numbuh 86 as Agent Maria Hill

Blossom as Pepper Potts

The aliens from the "Cartoon Network Invaded" event as the Chitauri

KND S.C.A.M.P.E.R.s as Quinjets

Horror's Hand as the Tesseract