n the first episode of the Pokémon anime, Pokémon - I Choose You!, Ash woke up late the day he was supposed to go to Professor Oak's Laboratory to obtain his first Pokémon. When he arrived at the lab, the three available starter Pokémon, Bulbasaur, Charmander, and Squirtle, had already been taken by other Trainers who arrived earlier. Seeing that Ash was disappointed, Professor Oak gave him Pikachu, which did not take a liking to his new Trainer, constantly zapping him and anyone else nearby. He refused to go into his Poké Ball, and when Ash failed to catch a Pidgey, he laughed at him. However, by the end of the episode, Ash gained Pikachu's trust by protecting him from an attack by a flock of Spearow and rushing him to the Pokémon Center. Pikachu and Ash soon became inseparable. In Pikachu's Goodbye, Ash gave Pikachu his consent to remain in a forest filled with Pikachu, but Pikachu decided to stay by Ash's side.