Legendary Pokémon are Pokémon that are characterized by their rarity and their high base stat totals. They are very difficult to obtain because of their difficulty to locate, high levels, and low catch rates. They are also guaranteed to have a minimum of 3 perfect IVs when captured or spawned in.
A Legendary Pokémon has a chance of spawning after 21 minutes have elapsed. This chance of spawning depends on multiple factors, including whether Legendary Pokémon can spawn in the different biomes and spawn locations, whether the spawn positions are close enough to players, the amount of terrain that is compatible for a Legendary Pokémon's spawn location, and a base percentage of the Legendary Pokémon spawn attempt succeeding (30% by default).
A message will be broadcast when one of them spawns. It is possible for more than one of each Legendary Pokémon to spawn in a world.
The following settings related to Legendary Pokémon can be changed in the Pixelmon config file:
- "allowLegendarySpawn": Whether Legendary Pokémon spawn naturally.
- "displayLegendaryGlobalMessage": Whether or not a message appears when a Legendary spawns.
- "legendaryRepeatSpawnTicks": The average delay after a Legendary spawns before the same Legendary can spawn again.
- "legendarySpawnChance": The base chance of a Legendary spawning attempt succeeding if it would otherwise fail.
- "legendarySpawnTicks": The amount of ticks that will pass before a Legendary attempts to spawn. This delay is randomly between 60% and 140% of the base tick amount that is specified.
- "reusableBirdShrines": Whether or not shrines are reusable after being used.
- "spawnStructures": If disabled, shrines (and Pokémon Centers) will not spawn naturally.
- "spawnBirdShrines": If the above setting is true and this setting is disabled, shrines will not spawn naturally but Pokémon Centers will.
- "cloningMachineEnabled": If disabled, cloning machines cannot be made, making Mewtwo impossible to obtain legitimately.