Pikachu Libre is the only pikachu with a black tip on his tail! :O

Pokemon 6028 Shiny Pikachu Phd Pokedex: Evolution, Moves, Location, Stats

Pikachu, Wiki

Today I learned that Pikachu Libre has a black tip as opposed to the actual Pikachus. : r/MandJTV

What happened to the black fur at the end of Pikachu's tail? - Quora

Does anyone else remember black tailed pikachu? : r/pokemon

Why did they get rid of Pikachu's black tip on his tail in Pokemon? - Quora

Pikachu's Black Tail and the Mandela Effect

Pokemon's Black Tail Pikachu Mandela Effect Explained

Why did they get rid of Pikachu's black tip on his tail in Pokemon? - Quora

The Pikachu Mandela effect, explained - Did Pikachu have a black-tipped tail? - Gamepur

Pikachu has no black on his tail circa 1998 : r/Retconned