Pokemon Kanto Complete by PurpleSpectre is the result of a side-project with the goal of remaking and expanding FireRed to make it possible to complete the Pokédex, progress to level 90+, and have access to most game mechanics and items from generation 3 games. Pokemon Kanto Complete Legendary locations will give you all information about Legendary Pokemon locations in this game.
Full details of Pokemon Legendary locations
Legendary birds: regular in-game encounter
Mewtwo: regular in-game encounter
Mew: Mew truck–SS Anne
Legendary beasts: Navel Rock, overworld sprite encounter (West corridor ladder)
Tower duo: regular in-game encounter (event tickets available in Vermilion City Poké Center post-game)
Celebi: Viridian Forest shrine encounter when holding the GS Ball (gifted in Viridian City Poké Center as champion)
Legendary giants: random wild Pokémon encounters in Kanto caves
Regirock: Victory Road
Registeel: Pokémon Mansion
Regice: Seafoam Islands
Eon duo: Navel Rock, random wild Pokémon encounter (East corridor ladder)
Super-ancient Pokémon:
Kyogre: Trainer Tower sea cave encounter
Groudon: MT Silver interior chamber encounter
Rayquaza: Sky Pillar via Route 21 (after Sevii Islands story arc)
Jirachi: Dark Grove, hiding in a small tree
Deoxys: regular in-game encounter
Conclusion
Here is the end of Pokemon Kanto Complete Legendary locations. If you want to use cheat codes, you can read Pokemon Kanto Complete Cheat Codes.