Find out how to meet and catch the 3 legendary beasts: Entei, Suicune and Raikou!
Meeting and catching Entei, Suicune and Raikou
To meet and then catch them, make sure you have beaten the Pokémon League, unlocked the National Pokédex and caught the 3 Regis.
Trade 3 small Mysterious Shards or 1 large Mysterious Shard at the Rosa Rugosa Park (Ramanas Park) for the Johto Slate. In that park, head to the Johto Room, where you will find a pedestal to insert the slate into. Entei, Raikou or Suicune will then appear (at random).
Entei
Entei Shiny Entei
Entei embodies the passion of magma. This Pokémon is thought to have been born when a volcano erupted. It can shoot huge jets of flame that scorch everything they touch.
Type : 
Weaknesses :
Height : 2.1 m (6’11”)
Weight : 198.0 kg (436.5 lbs)
Gender : unknown
Category : Volcano
Ability : Pressure
Moves : Extrasensory / Lava Plume / Swagger / Sunny Day
Suicune
Suicune Shiny Suicune
Suicune embodies the serenity of a pure spring. It runs across the plains with grace. This Pokémon has the power to purify water.
Type :
Weaknesses : 
Height : 2.0 m (6’07”)
Weight : 187.0 kg (412.3 lbs)
Gender : unknown
Category : Aurora
Ability : Pressure
Moves : Extrasensory / Surf / Mirror Coat / Rain Dance
Raikou
Raikou Shiny Raikou
Raikou embodies the speed of lightning. The roars of this Pokémon send shock waves down from the sky, striking the ground with the force of thunder.
Type :
Weaknesses :
Height : 1.9 m (6’03”)
Weight : 178.0 kg (392.4 lbs)
Gender : unknown
Category : Thunderstorm
Ability : Pressure
Moves : Extrasensory / Discharge / Reflect / Rain Dance
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Sprite credits to Poképédia.
