Cast[]
- Spongebob as Iron Man (both were voiced by Tom Kenny)
- Timmy as Captain America
- Invader Zim as Dr. Doom
- Cat Man as Nighthawk (both were voiced by Adam West)
- The Shredder as Thanos
- Dudley Puppy as Hulk
- Jorgen as Captain Marvel
- Katara as Jean Grey
- Mr. Crocker as Ringmaster
- Gir as H.E.R.B.I.E
- El Tigre as Wolverine
- Tooth Fairy as Ms. Marvel
- Jenny Wakeman as Scarlet Witch
- Gallaxhar as Egghead
- Jimmy Neutron as Colossus
- Danny Phantom as Reptil
- Mr. Blik as Professor X
- Roger Klotz as Molecule Man
- and more