Marvel and Doraemon: Heroes Unite!

Marvel and Doraemon: Heroes Unite! is a television special of the anime series Doraemon, that features characters from Marvel Entertainment.

Plot
When Doraemon's latest gadget accidentally causes the Marvel heroes to lose their powers, they team up with Doraemon and friends to save the world from the Marvel villains.

From Doraemon:

 * Doraemon
 * Nobita (Noby)
 * Shizuka (Sue)
 * Gian (Big G)
 * Suneo (Sneech)
 * Dekisugi (Ace)
 * Nobita's Teacher (Mr. S)
 * Nobita's Mother (Noby's Mother)
 * Nobita's Father (Noby's Father)
 * Sewashi (Soby)

From Marvel:

 * Black Widow
 * Captain America
 * Captain Marvel
 * Cyclops
 * Doctor Octopus
 * Firestar
 * Green Goblin
 * Hawkeye
 * Human Torch
 * Iceman
 * Invisible Woman
 * Iron Man
 * Jean Grey
 * Juggernaut
 * Kitty Pryde
 * Magneto
 * Mary Jane Watson
 * Miss Marvel
 * M.O.D.O.K.
 * Mr. Fantastic
 * Red Skull
 * Rogue
 * Sabretooth
 * Scarlet Witch
 * She-Hulk
 * Spider-Man
 * Storm
 * The Incredible Hulk
 * Thing
 * Thor
 * Venom
 * Wasp
 * Wolverine