
Revealing mistake: When Ash and his friends run into the Pokémon Center, a line is briefly layered over them. (00:07:06)

Revealing mistake: As Seviper slips back into the bush after Torchic trips on its tail, the end of its tail is cut off. (00:03:16)
Continuity mistake: When May says, "It looks like Treecko might be feelin' a little weird around all our other Pokémon," there is a tree nearby, but in the next shot, there is not. (00:00:40)
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 ★