However, some avid fans believe they've cracked the case, attributing the mix-up to Pikachu's pre-evolutionary form, as one Pokéfan corrected an "obsessed" commenter: "No he didn't. That's Pichu ...
That's Pichu, trust. Had the black. I don't know what you're talking about but the old school Pikachu did not have that black stripe." Some were adamant on the unique detail though, as one user ...