Here is a list of rare pokemon:
Girjinta is a ghost dragon pokemon you can meet it at lvl 70.
Azelf is a psychic pokemon. It is really small but it packs a punch.
Uxie is a version of Azelf. It is the same type and it really packs a punch.
Mesprite is yet another version of Azelf. It is the same type and it will run away when you find it.
Dialga is a pokemon that you catch or kill. It is really strong and knows a really strong move called "Roar of Time." It is dragon steel type. You meet it at lvl 47.
Pialga I don't know much about and is like a version of Dialga.
Heatran I don't know very much but you meet it at lvl 70 and it is hard to catch.
Arceus is a pokemon who can change type. If you kept the colored tiles you can give it to it and it will change type.
Groudon is a giant pokemon. It is a really heavy pokemon. It created land.
Kyogre is the pokemon who created the sea.
Raqauza is the pokemon in the ozone layer. It is the only pokemon that scares Kyogre and Groudon.
Regice freezes anything that touches it. You catch it at lvl 40.
Regirock is a pokemon that heals using rocks. You catch it at lvl 40.
Registeel is made of steel and it came from outer space. You catch it at lvl 40.
Luigia is an water bird that is really hard to find and beat.
Ho-oh is just like luigia but part fire.
Celibi is a pokemon that can control time. It is really powerful.
Jirachi is a pokmon that grants any wish.
Darkrai is a dark pokemon. I don't know much about it is a high lvl when you catch it.
Suicune is a pokemon that flees when it sees humans.
Raiku is an electric type and like suicune runs away.
Entei is like suicune and Raiku but it is a fire type and it is born in a volcano.
Rotom is a legendary that is electric ghost. It is inside a TV when you meet it.
Mewtwo is a physcic peokemon and it is supposedly the strongest pokemon.
Mew is the pokemon that had the D.N.A to make Mewtwo.
Shaymin is a grass type that is lvl 30 when you meet it it looks like a shrub.
Regigass is a normal pokemon, You need all the regi's to get to him.Catch him quickly because every turn it gets stronger.
Cressalia is the pokemon that soppesedly stands for the moon.
Here are some beginning pokemon:
Squirtle is a bigginning water pokemon. It evolves into blastoise at the last form.
Charmander is a fire type it evolves into charzard as the last form.
Bulbasaur is a grass pokemon it evolves into venausor in the last form it's bulb grows bigger as it evolves.
Pikachu is an electrick type you can only get it on yellow version.
Cindiquil is a fire type. It evolves into typhlosion at the last form.
Chikorita is a grass type and it evolves into Maganium at the last form.
Totodile is a water type and it evolves into fraligater.
Mudkip is a water type. It gains a second type when it evolves.
Torchic is a fire type. It gains a second type as it evolves.
Treeko is a grass type. It's final evolution is sceptile.
Turtwig is the pokemon that I picked for Diamond it is a grass type it's final form gains a second type.
Piplup is the pokemon I picked for Pearl. Piplup gains a second type when it becomes an Empoleon.
Chimchar gains a second form as it evolves it is a fire type.
Pokemon league types:
In jhoto Region the first person is a phycic type trainer. The second person is a poison type trainer. Then there is bruno that is a fighting type trainer. He is really strong. The last of the elite four is a dark type. The Champion is a dragon type. He is going to be really hard to beat. Make sure you're prepared.
In Kanto the pokemon league first trainer is an ice type trainer. The second person is bruno. He is the same from jhoto. The third person is ghost and poison type. The fourth is lance the dragon trainer. The champion is your rival.
In hoenn region the pokemon league starts out with a dark trainer. Then there is a ghost type trainer. Next comes the Ice type trainer and then a dragon trainer. The champion is either water or steel type depending on the game.
In the Sinnoh region it starts off with a bug type trainer do not take him lightly. Then there is a ground type trainer. Then there is a fire type trainer. Then there is a master of phycic type master. Then the champion. The champion has no specific type.
Good luck. I hope my info helped you. I know how tough they are and you will need luck or really strong pokemon.=) I have beaten all these pokemon leagues.

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