Z-A leak has surfaced online, revealing a new Mega Evolution for an original Gen-1 Pokemon that will debut in the Pokemon ...
Pokemon Red and Green (Japan), Pokemon Red and Blue (USA), Pokemon Yellow 1996-1999 It all started with the 151 original, first-generation Pokemon from the Kanto region, which were introduced in ...
which is why it's one of the hardest boss fights in Pokemon history. The generation where the creature-capturing first began, gen 1 is still one of the strongest generations in the Pokémon franchise.