get a Pokemon with the ability sound proof or a Pokemon with arena trap so he cant run
migrate it from leaf green or fire red
use a masterball
first you must hurt him and then you can catch him with ultra ball but he may use recover then you must hurt him again then you can catch him with ultra ball and 5% possibility to catch him with pokeball
Save your MasterBall for the Ledgendary dog (Suicune, Entei or Raikou). Don't use it on Mewtwo because it is really easy to catch him with just ultra balls. Just make sure you save before you fight Mewtwo :)
Use a master ball.
okay you wont find entei in leaf green all the time t depends on the start if you chose chamander you get suicune if you chose squadal you get entei if you chose balbasuar you get rakiou. just walk around make sure you got a master ball . contact me if questions smurfitt_7@hotmail.com
You can't catch all three. You can only catch one depending on your starter Pokemon. Starter Dog --------------------------------- Bulbasaur Entei Charmander Suicune Squirtle Raikou There you go, you're welcome!!!
u must get national dex in fire red, leef green or yello and then beat the league and then u will randomly find them around the routes
use ur master ball NOTE ONLY IN LEAF GREEN AND FIRE RED
YES
you really can't catch celebi in a Pokemon game without cheats
The only way to obtain them is by trading from Pokemon fire red/leaf green being as you can't trade between 1st/2nd to 3rd generation.