Doraemon x Pokemon: Future Portal

Doraemon x Pokémon: Future Portal, also know in Japan as Doraemon x Pocket Monsters XY: Mirai Portal (ドラえもん x ポケットモンスターXY 未来ポータル) is a crossover television special set between the Doraemon and Pokémon universes. It is a co-production between Shgakukan-Shueisha Productions Co, Ltd. (who owns the rights to both the Pokémon and Doraemon franchises in Japan) and both series' respective production companies, Nintendo/The Pokémon Company, TV Tokyo, OLM, Inc., Fujiko Productions, Shin-Ei Animation, and TV Asahi.

Plot
Doraemon and friends have been accidentally teleported - and end up trapped - in their favorite video game, Pokémon. They later encounter Ash Ketchum and friends who are battling with his archenemies, the Team Rocket, and must find a way to get them home.

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)

From Pokémon:

 * Satoshi (Ash Ketchum)
 * Pikachu
 * Kasumi (Misty)
 * Takeshi (Brock)
 * Professor Okido (Professor Oak)
 * Sakaki (Giovanni)
 * Musashi (Jessie)
 * Kojiro (James)
 * Nyarth (Meowth)
 * Hanako (Delia Ketchum)
 * Joi (Nurse Joy)
 * Junsa (Officer Jenny)
 * Mewtwo

Pokemon

 * Pikachu
 * Nyarth (Meowth)
 * Foodin (Alakazam)
 * Fushigibana (Venusaur)
 * Marumine (Electrode)
 * Purin (Jigglypuff)
 * Mewtwo
 * Sawamular (Hitmonlee)
 * Betbeter (Grimer)
 * Kamonegi (Farfetch'd)
 * Mankey
 * Kongpang (Venonat)
 * Zubat
 * Hoho (Hoothoot)
 * Golduck
 * Arbok
 * Sleep (Drowzee)
 * Pixy (Clefable)
 * Kailios (Pinsir)
 * Kameil (Wartortle)
 * Goriky (Machoke)
 * Nyorobon (Poliwrath)
 * Coil (Magnemite)
 * Biriridama (Voltorb)
 * Butterfree
 * Thunder (Zapdos)
 * Pigeot (Pidgeot)
 * Golbat
 * Isitsubute (Geodude)
 * Dogars (Koffing)
 * Tosakinto (Goldeen)
 * Tattu (Horsea)
 * Showers (Vaporeon)
 * Koduck (Psyduck)