From Bulbapedia, the community-driven Pokémon encyclopedia.
This is a list of Pokémon obtainable from events found in the Generation II Pokémon games. These specific instances of Pokémon can only be obtained once per game; however, some may also be obtained in other ways as well.
This Gyarados is found at the Lake of Rage.
This Lapras can only be found every Friday at Union Cave.
This Eevee is obtained from Bill in Goldenrod City.
This Snorlax is found on the path to Diglett's Cave in Vermilion City. It will attack the player after the Poké Flute is played.
After the player defeats Falkner, Professor Elm's aide will give the player a Togepi Egg.
This Sudowoodo is found at Route 36. It attacks the player after it is watered with a Squirtbottle.
This Shuckle is obtained from a man in Cianwood City. It can later be returned to him.
After the player defeats Kiyo in Mt. Mortar, he will give the player a Tyrogue.
After the player encounters the legendary beasts at the Burned Tower, Raikou will roam Johto.
After the player encounters the legendary beasts at the Burned Tower, Entei will roam Johto.
Varies by Version
The following Pokémon can either be found in all game under varying conditions, or are completely exclusive to one particular game.
In Pokémon Crystal only, this Dratini can be obtained in the Dragon's Den after the player answers the Dragon Master's quiz. If the player gives an incorrect answer to one of the quiz questions, ExtremeSpeed will be replaced with Leer.
In Pokémon Gold and Silver, after the player encounters the legendary beasts at the Burned Tower, Suicune will roam Johto. In Crystal, however, Suicune will appear in several locations around Johto before settling down the Tin Tower to challenge the player, provided he or she has the Clear Bell, which he or she obtains from the Radio Tower director.
In Pokémon Silver, Lugia can be found in the Whirl Islands after the player obtains the Silver Wing from the Radio Tower director. In Pokémon Gold and Crystal, Lugia can be found in the Whirl Islands after the player obtains the Silver Wing from a man in Pewter City. The level Lugia is at varies from version to version.
In Pokémon Gold, Ho-Oh can be found in the Tin Tower after the player obtains the Rainbow Wing from the Radio Tower director. In Pokémon Silver, Ho-Oh can be found in the Tin Tower after the player obtains the Rainbow Wing from a man in Pewter City. In Pokémon Crystal, Ho-Oh can be found in the Tin Tower after the player obtains the Rainbow Wing from the three sages of the tower after catching all three legendary beasts. The level Ho-Oh is at varies from version to version.
In the Japanese version of Pokémon Crystal only, this Celebi was obtainable at the shrine inside the Ilex Forest if the player downloaded an event that distributed the GS Ball on their Mobile System GB. Since the Mobile System GB accessory was never released outside of Japan, no international players could get the GS Ball outside of the use of cheating devices.