You can't catch entei in Pokemon black he is on a different version
you cant catch entei on Pokemon pearl. entei is a johto Pokemon and Pokemon pearl is a sinnoh game. the only way to getentei is to trade it over from another game games compatible are Pokemon diamond, Pokemon platinum, Pokemon soulsilver and Pokemon heartgold. the last two i am sure you can get entei. (i have seen it in the wild)
U CANT CATCH HIM u have to trade him or hack the game
you have to send it over from an older pokemon game
You must have chosen bulbusaur at the beginning of the game and have the pokedex eventually entei will show up when your in grass. If you didn't choose bulbusaur find someone who did get entei, if you have a Pokemon colosseum you get a shadow entei from the game.
You cannot catch Rayquaza in-game in Pokemon Black.
Entei is only obtainable if you Migrate it from FireRed Or LeafGreen, or if you migrate it from another GBA game that has traded with Colosseum for Entei. So, you can't catch Entei in-game on platinum. You can only trade for it.
To get Entei in your Pokedex for Pokemon Platinum, you must migrate the Pokemon from FireRed or LeafGreen. You may also get it from a Gameboy Advance Game that has obtained the Entei from Pokemon Colosseum. Alternatively, you can catch the Pokemon in HeartGold and SoulSilver and trade it to your Platinum game. It is found after being released from the Burned Tower in Ecruteak City, though you have to track it through Johto with your PokeGear's Map Card.
Sorry, you can't catch dialga in Pokemon black. You need to trade with a friend from an earlier game.
You can't catch those Pokemon on Pokemon Black. You'll have to either trade for them or transfer them from a DS Series game.
You cant catch him but you can transfer him from any generation IV game or trade with someone who has it on their Pokemon Black/White
You can find the main pokemon of the game at spear pillar. In all of the games, after beating the elite four, mesprit, uxie, and azelf are located at the three lakes in the game. I don't know how to catch entei, suicune, or raikou yet.
You have to transfer it from another game.