Nicktoons/Marvel

Cast: More ideas?
 * Timmy Turner/Spider-Kid as Peter Parker/Spider-Man (In Abra-Catastrophe, Timmy dressed up like Spider-Man; Ultimate Spidey is voiced by Drake Bell)
 * Dudley Puppy/Iron Mutt as Tony Stark/Iron Man (watch T.U.F.F. Puppy's Iron Mutt episode)
 * Jimmy Neutron/Hulk Jimmy as Bruce Banner/Hulk (watch Jimmy Neutron's The N-Men episode)
 * The N-Men as the agents of S.M.A.S.H.
 * Doug Funnie/Quailman as Steve Rogers/Captain America (the Capt. is the 1st Avenger; Doug was the 1st Nicktoon)
 * SpongeBob SquarePants as Thor (Thor made a reference to SpongeBob in a comic strip)
 * Jenny Wakeman/XJ9 as Natasha Ramanoff/Black Widow
 * Avatar Aang as Clint Barton/Hawkeye (he has an arrow on his head, so he is now the Last ARROW-bender!)
 * Manny Rivera/El Tigre as T'Challa/the Black Panther
 * Frida Suarez as Ororo Iqadi T'Challa/Storm
 * Bessie Higgenbottom/the Mighty Bee as Janet van Dyne/the Wasp
 * Rocko the Wallaby as Ant-Man
 * Herbert Dumbrowski as Nick Fury
 * Keswick as Phil Coulson
 * Agent Jumbo as Maria Hill
 * Other T.U.F.F. agents as the agents of S.H.I.E.L.D.
 * The Mega Diaper Babies as the Fantastic Four:
 * Tommy Pickles/Changing Baby as Reed Richards/Mr. Fantastic
 * Lil Deville/Dotted Line Girl as Sue Storm/the Invisible Woman
 * Phil Deville/Spitball Boy as Johnny Storm/the Human Torch
 * Chuckie Finster/Stinky as Ben Grimm/the Thing
 * Danny Fenton/Danny Phantom as Johnny Blaze/Ghost Rider
 * Arnold Shortman as Matt Murdock/Daredevil (they both 'lost' a relative)
 * Zim as Frank Castle/the Punisher
 * Tak as Logan Howlett/Wolverine
 * Jeera as Rogue
 * The Chief (Tak & the Power of Juju) as Cyclops
 * Keeko as Beast