Every Ditto has the ability to copy a Pokémon's entire cell structure in an instant and become its exact replica. They're terrible at remembering techniques, but when they use Transform, they temporarily learn all of their foe's moves. If a Ditto starts to laugh, it weakens and can't hold its transformation.
Game: Pokémon Red & Blue
First Appearance: 9/98
The waters of the Whirl Islands are home to this legendary Pokémon, whom few have seen. Lugia lives quietly in the deepest ocean trenches for one very good reason: its combined aerial and psychic powers are so strong as to be extremely dangerous. The special moves of this gargantuan creature include the destructive wind assault known as Aeroblast.
Game: Pokémon Silver
First Appearance: 11/00
The evolved form of Koffing, Weezing is basically a pair of Koffing fused together. They tend to float in the air and emit gas or noxious smoke from the outgrowths that cover their bodies. As strange as it may seem, diluting Weezing emissions as much as possible creates one of the most exquisite perfumes known to man.
Game: Pokémon Red & Blue
First Appearance: 09/98
These adorable Spike Ball Pokémon hatch from eggs given out by Professor Elm's assistant. Common superstition holds that their shells are chock-full of happiness and that they become good-luck charms when handled with kindness. It's impossible to predict which ability a Togepi will call upon when it uses its Metronome move, so you'd better be ready!
Game: Pokémon Gold & Silver
First Appearance: 10/00
A patient Pokémon, Wobbuffet lives in darkness to hide its mismatched black tail. Even for a stoic Pokémon, this creature is a testament to self- control; it will not actively attack an opponent. Its Counter and Mirror Coat moves are solely used for reflecting attacks directly back at its antagonist.
Game: Pokémon Gold & Silver
First Appearance: 10/00
Mew is an extremely rare Pokémon that has been seen by only a few people. Information on every Pokémon in the world is contained in Mew's cell structure, so it has the ability to use any and all TMs and HMs. Some Pokémon scholars believe Mew to be the ancestor of all existing Pokémon, but the idea is debatable.
Game: Pokémon Red & Blue
First Appearance: 09/98
This water-mouse Pokémon evolves into Azumarill. The round ball on the end of its tail acts like a flotation device, so it can float safely in the roughest of water conditions. It resides on Mt. Mortar in seclusion; few of the creatures are ever seen. Marill's cuteness has earned it a large and loyal fan base.
Game: Pokémon Gold & Silver
First Appearance: 10/00