Pokémon Indigo League Episode 4 Challenge of the Samurai ( Air Date 1997-04-22 ) Genre Animation, Action & Adventure, Sci-Fi & Fantasy category. Overview "Misty and Ash continue to wander the Viridian Forest when they spot a Weedle. As Ash battles it, he's distracted by a boy dressed as a samurai and calling himself (naturally) Samurai. Samurai challenges Ash to a battle, and Ash gets the advantage when his Metapod defends itself against Samurai's Pinsir. Samurai sends out his own Metapod—and a standoff begins.".