Jirachi (ジラーチ, Jirachi) is a legendary Pokémon.
Jirachi is a Steel/Psychic-type Mythical Pokémon introduced in Generation III, and is categorized within the Pokédex at #385 as the "Wish Pokémon". It is said to be able to grant the wishes written on the notes on its head, a reference to the Japanese festival Tanabata.
Despite its DOJO!! description Jirachi cannot learn Fly in any game, though like other Pokémon it is depicted as being able to float.
In Super Smash Bros. Brawl
As a Poké Ball Pokémon
Jirachi, Mew, and Celebi will appear 1/493 of the time individually, which is a reference to there being a total of 493 Pokémon in Generation IV (at the time of Brawl's release). This is the rarest frequency of appearance for a Poké Ball Pokémon. This has given some evidence to the secret Pokémon Arceus, the only one out of 493 not revealed at the time of Brawl's release.
Jirachi has no gameplay-related role, only appearing as a trophy exclusive to the Wii U version.
Jirachi's trophy is part of the Legend of Pokémon Ruby & Pokémon Sapphire Trophy Box.
Since Jirachi is only awake for seven days every one thousand years, it's an even bigger sleeper than Snorlax! It can't just be sleeping the whole time, though. It's probably hard at work deep in the land of dreams, strengthening it's ability to grant people's wishes. If it detects danger while asleep, it can fight without even waking up!