Legendary Pokemon are incredibly rare and powerful pokemon. Most legendaries are hard to catch, and you can't catch the same legendary twice in the same game in the main story.
Mythical Pokemon are a group of incredibly rare Pokemon, so rare that most people don't believe their existence. Most Mythical Pokemon are only obtainable from events, excluding Deoxys.
The Legendary Pokemon are sorted by generation from 1 to 7, you can visit each with this navigation bar.
There are also type charts for each generation, in case you want to find type matchups between Legendary Pokemon. For balance reasons, multiple types were introduced through the generations and some type matchups were changed.
|Home Page||Generation 1||Generation 2||Generation 3||Generation 4||Generation 5||Generation 6||Generation 7|
|Type Charts:||Generation 1||Generations 2-5||Generations 6-7|