JIRACHI

In Ruby, A legend states that JIRACHI will make true any wish that is written on notes attached to its head when it awakens. If this POKéMON senses danger, it will fight without awakening.

Sapphire JIRACHI will awaken from its sleep of a thousand years if you sing to it in a voice of purity. It is said to make true any wish that people desire.

Emerald JIRACHI is said to make wishes come true. While it sleeps, a tough crystalline shell envelops the body to protect it from enemies.

In Fire Red, it is said to make any wish come true. It is awake for only seven days out of a thousand years.

In Leaf Green, it is said to make any wish come true. It is awake for only seven days out of a thousand years.

Location
Game Rarity Location

Ruby None Obtain from Special Event, Colosseum Bonus Disk or Pokémon Channel
Sapphire None Obtain from Special Event, Colosseum Bonus Disk or Pokémon Channel
Emerald None Obtain from Special Event, Colosseum Bonus Disk or Pokémon Channel
FireRed None Obtain from Special Event
LeafGreen None Obtain from Special Event
Colosseum None Trade from Ruby/Sapphire/Emerald/FireRed/LeafGreen
XD None Trade from Ruby/Sapphire/Emerald/FireRed/LeafGreen