Legendary and Mythical Pokémon

About
Legendary and Mythical Pokémon aren't found by leveling up Pokémon or owning certain species, instead, they are found on-field by summon. There is NO way to decide which Pokémon is summoned. There are two ways to summon a Legendary or Mythical Pokémon:
 * Own a Shiny Hoopa and use the move "Summon" (cooldown 10 minutes)

These Pokémon gain half as much EXP as normal Pokémon but are usually much stronger.
 * Wait for the server to summon a Special Pokémon automatically. (cooldown 15 (30) minutes)

Legendary/Mythical Pokémon Locations
Below is a table with the locations of the Legendary and Mythical Pokémon.

Trivia

 * Despite Rotom not being a Legendary or a Mythical, it still spawns by summon. It is not included on this page for that reason.
 * The Regi Trio and the Titan were obtainable a long time ago. It is no longer obtainable as of now.