Continuity mistake: In the English dub, during the intro, when Team Rocket's Pokémon appear, the red in Arbok's pattern turns purple. (00:01:13)
Other mistake: In the English dub, when Bayleef jumps up in the outro, her left pupil is mistakenly coloured white instead of black. (00:21:00)
Other mistake: In the English dub, when Bayleef jumps up in the opening, her left pupil is mistakenly coloured white instead of black. (00:00:47)
Answer: There are a lot of fan theories around this, but the most common theme is that Pikachu had another trainer before Prof. Oak, who gave him to Ash. Pikachu didn't appreciate being handed over.
Ssiscool ★