Duplicate Items/Clone Pokemon

Note: Use this code at your own risk. It may corrupt your save data if done incorrectly.

Go to a PC, and save. Attach the item you want to duplicate to the Pokemon you want to clone. Deposit it into the PC. Change boxes. When the screen is saying "Saving the game..." Turn off your GB. Turn it back on. You should have the deposited Pokemon in the PC, and a clone of it in your lineup. The item will either be on both monsters, or in your Backpack. Note: while doing this code, DO NOT withdraw any Pokemon. When the GB is turned back on, you'll find that the withdrawn Pokemon has been deleted. Note: You can duplicate up to 5 items/Pokemon at a time.

Breeding/Evolving Pokemon

Breed two Pikachus to get Pichu.
Breed two Electabuzzes and you get Elekid.
Breed two Clefairies and you get Cleffa.
Breed two Jigglypuffs and you get Igglybuff.
Breed two Magmars and you get Magby.
Breed a Venonat with a Pinsir to get Pinsir.
Breed a Hitmonchan or Hitmonlee with a Ditto to get Tyrogue.
Breed a Clefairy with a Snubbull to get another Snubbul.
Breed a Gyarados with the Red Gyarados to get a golden Magikarp.

Pokemon Not in the Game

The following Pokemon cannot be found in Pokemon Crystal. You'll have to transfer them from Gold, Silver, Red, Yellow or Blue. As always, Mew and Celebi can only be gotten from special events or contests.

Mankey
Primeape
Vulpix
Ninetales
Mareep
Flaaffy
Ampharos
Girafarig
Remoraid
Octillery
Bulbasaur
Ivysaur
Venusaur
Charmander
Charmeleon
Charizard
Squirtle
Wartortle
Blastoise
Omanyte
Omastar
Articuno
Kabuto
Kabutops
Zapdos
Moltres
Mewtwo

Get the Rainbow Wing

To get the Rainbow Wing, capture Raikou, Suicine and Entei and take them back to the Tin Tower. This method is different than those used in Gold and Silver.

Choose a New Trainer

Pokemon Crystal allows you the option of selecting a male or female Trainer when you begin play.

Hint: Capture A Cinderquil

One way to get a cyndaqul is to go to the day care center just before goldenrod and breed a fearow with a typhlosion to get a cyndaquil make sure fearow is a feamale and typhlosion is a male for some reason it will not work the other way around.