How do you catch a Rayquaza in Pokemon Pearl?

You can not catch Rayquaza in Pokemon Pearl. You can get Rayquaza in Pokemon Emerald, Ruby, or Sapphire at the top of the Spear Pillar. You can transfer the Rayquaza to Pokemon Pearl through the Pal Park which is unlocked by defeating the elite four and obtaining the national dex by seeing all of the Pokemon in the sinnoh dex.

The only other way to catch a Rayquaza in Pokemon Pearl is by getting an action replay which is a cheating device you can buy at a GameStop or other stores that sell Video Games.

The cheat code to catch Rayquaza in Pokemon Pearl is called the Pokemon modifier code.

The code number is

94000130 FDFF0000

B21C4D28 00000000

B0000004 00000000

94000130 FEFF0000

00000890 01ED0001

D0000000 00000000

DA000000 00000892

DC000000 00024620

C0000000 0000000B

D7000000 00000000

DC000000 00000006

D2000000 00000000

You have to press L+R and then there will be 493 master balls in your item bag. Throw away the masterballs until it reaches the No. of the Pokemon you want to catch. Then you go run in some grass and press L while running and the number of masterballs you have will represent the number of the Pokemon.

For example: You said that you wanted to get a Rayquaza and the No. for Rayquaza in the pokedex is 384. So that means that you would throw away 104 master balls and then press and hold the L button and then run into the grass and a Rayquaza will come.