Whoever its opponent, and however horrible the attack it receives, all it does is Splash around.
- Pokémon Stadium
Magikarp
Often paired with a legendary Pokémon, this was released via a Key Item event. It is known to cause nightmares and bad dreams. It is also the last Pokémon in the Hisui dex.
Darkrai
This Gym Leader becomes an Elite Four member in a sequel game
Koga
Known as the "Ball Pokémon", it is usually found in power plants or near electrical fields. It has a violent attitude and will explode if agitated.
Voltorb/Electrode
Obtained via the Old Man glitch on Cinnabar Island, this is the only "Bird" type Pokémon. Its level up learn set includes Water Gun, Water Gun, and Sky Attack.
MissingNo.
_______ has a dream of one day soaring in the sky. In doomed efforts to fly, this Pokémon hurls itself off cliffs. As a result of its dives, its head has grown tough and as hard as tempered steel.
- Pokémon Ruby
Bagon
This Pokémon hibernates for extensive periods of time. It has a signature move that is similar to Future Sight. It was obtainable via Pokémon Colosseum preorder bonus.
Jirachi
This Gym Leader went from being a rival to being a Gym Leader in the sequel game. He is very witty, but very honest and "a little difficult". He is very critical of the region's champion.
Cheren
This spherical Pokémon has light blue fur with white spots. It uses a thick layer of blubber to keep itself warm in colder temperatures. It is often seen in a cheerful mood where it claps to show affection. Its main mode of transportation is rolling around.
Spheal
This data value determines a Pokémon's critical hit chance in Red/Blue/Yellow
Base Speed
It feeds on soil. After it has eaten a large mountain, it will fall asleep so it can grow.
- Pokémon Gold
Larvitar
The only Mythical that can Mega Evolve. It can create diamonds using the carbon in the air. It is thought to be a mutation of a different Pokémon species introduced in the same generation.
Diancie
Name a Gym Leader that Ash has travelled with in the anime (Excluding Brock and Misty)
Cilan, Iris, Clemont
Being comprised of a green, gel-like substance, this Pokémon is known as the "Cell Pokémon". The liquid around its body allows it to live in any environment, including the empty void of space.
Solosis
What type(s?) are super effective against Psychic types in Red/Blue/Yellow?
Bug
The spirits it absorbs fuel its baleful fire. It hangs around hospitals waiting for people to pass on.
- Pokémon Black 2 and White 2
Lampent
This Pokémon has two forms based on knowing a certain move. It can walk on water and is often seen near natural bodies of water. It is obtainable in the Crown Tundra DLC for Sword and Shield.
Keldeo
Name a double battle Gym Leader
Tate and Liza, Raihan, and Ryme
This Pokémon has a round body covered in purple fur which contains a toxin. It has highly developed eyes that allow it to shoot beams and act as a radar. It is known as the "Insect Pokémon".
Venonat
This Pokémon was thought to be obtainable by moving a truck. Other than glitches, it is currently unobtainable. Its inclusion into the games was somewhat of an accident.
Mew
This Pokémon has the habit of hugging its companions. Many Trainers have left this world after their spines were squashed by its hug.
- Pokémon Moon
Bewear
Known as the "Gloomdweller Pokémon", it hides in the shadows to hide from humans. It appears to have a green cloak covering its wispy body. It has a signature move and a signature Z-Move.
Marshadow
He is a relaxed and carefree swimmer who enjoys fishing. His team consists of three Pokémon despite being the final Gym Leader in the game he's from. He is indifferent in regards to the region's evil team.
Marlon
A round and red Pokémon with stubby appendages. There is a flame inside its body that causes it to be in an uncontrollable state. It is seen as a symbol of good luck and also has a regional variant.
Darumaka
The only family to naturally have three 4x weaknesses
Paras/Parasect