Pokemon Best Wishes! Season 2: Decolora Adventure - Dent to Takeshi! Gyarados no Gekirin!!
English title: Pokémon: Black & White: Adventures in Unova and Beyond - Cilan and Brock!! Gyarados's Outrage!!
Japanese title: デントとタケシ！ギャラドスのげきりん！！
Alternative titles: Pocket Monsters: Best Wishes Season 2 Special, Dent and Takeshi! Gyarados's Outrage!!
Type: TV Special
Source: Unknown
Episodes: 1
Status: Finished Airing
Aired: Oct 3, 2013
Duration: 23 min
Rating: PG - Children
Studios: OLM
Producers: TV Tokyo
Genres: Action, Adventure, Comedy, Fantasy
Demographics: Kids

Dent and Takeshi! Gyarados's Outrage!! is the first spin off of the Best Wishes series of the Pokémon anime.

(Source: Bulbapedia)