Doraemon and the Guardians of the Galaxy

 is a television special of the anime series Doraemon, that features characters from Guardians of the Galaxy.

Summary
Doraemon and friends find themselves in an interstellar battle where a ferocious genocidal militarist named Ronan is trying to take over Earth. Our heroes joins a team of alien superheroes called the Guardians of the Galaxy to stop Ronan.

From Doraemon:

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

From Guardians of the Galaxy:

 * Star-Lord
 * Rocket Raccoon
 * Gamora
 * Drax the Destroyer
 * Groot
 * Ronan the Accuser
 * The Collector