Pokemon Crystal Cheats

Unknown:
In the back of each puzzle room in the Ruins of Alph is a word formed by
the unknowns. They require you doing things in order to get into the
back room. In one place you most equip a water stone. In another, you
must put a hooh frist in your party. In another you must use an escape
rope or flash. Once in the back room pick up the items that fall through
the hole to find a room with a message about unknown. Fall down a hole
there to return to the unknown shrine.

Celebi:
Hook up the mobile adapter*. Go to the communication center in
goldenrod, and read the message on the lockers to the right of the room.
They will talk about a present from the future. Leave and the blue
headed nurse will ask you to defeat all 16 gym leaders in order to
obtain the GS ball. Once you have done so give the ball to kurt. the
next day he will give it back. put it in the shrine in the ilex forest
and a level 30 celebi will appear to fight you.

Suicune:
Find a suicune in three different places( right out of natinal park,
below the bush by mount mortar, and up in cianwood), then go to tin
tower and a suicune will appear to fight you.

Mysterious channel 13.5:
use your radio in the ruins of alph to tune into channel 13.5. you will
hear strange sounds made by the unowns.

Pokemon/Item Duplication:
-Pick the Pokemon and item you want to duplicate
-Equip the chosen item onto the chosen Pokemon
-Go to Bill's PC and switch boxes
-Deposit the Pokemon with the item
-Switch Boxes again
-Turn off the Gameboy when it says "SAVING... DONT TURN OFF THE
POWER" (Let the whole thing come up.)
-Turn the power back on.
-You will have the Pokemon with the Item in your party and your PC.
***This code works great with rare candies and masterballs***

Legendary dogs:
The Legendary Dogs are Raikou, Entei, and Suicune. You will find Entei
and Raikou after you have scared them away from the Burned Tower, but
you will have to do more to find Suicune. Suicune can be caught at the
Tin Tower in Ecrukteak City after you have received the Clear Bell from
the Station Manager, have defeated the Ecrukteak City Gym Leader, scared
away Raikou, Entei, and Suicune, and have defeated the Wise Trio. Only
when the those tasks have been completed, will you be able to fight
Suicune.

Find Suicune (Suikun) in three different places (right out of National
Park, below the bush by Mount Mortar, and up in Cianwood). Then, go to
Tin Tower, and Suicune will... 

Ok here is what you do:(make sure the item u wana clone is being held by the pokemon ur cloning)
1: get your PC to a box with no pokemon
2: save infront of computer in PC
3: go into computer and deposit the pokemon you wana clone
4: go to change box and switch to one with none in it
5: would you like to saveYES overwrite saveYES
!!!IMPORTANT STEP DONT MESS UP 6: when the period is typed at the end of SAVING, DONT SHUT OFF THE POWER.(or somthin like that) wait like 1/2 a second then restart the gb (or gba or close the window if gba emulator)
NOW THE POKEMON YOU PUT IN BOX SHOULD BE IN BOX AANNDD IN UR PARTY AND BOTH WILL BE HOLDING THE ITEM THEY WERE HOLDING

Go to where the man says you can't come in becuase you'll fall off the edge. Then press L,L,R,R,A,B,L,A.

Before you get your first pokemon save the game. go through the game all the way until you catch another pokemon DONT SAVE. put your starter in the box in the pokemon center, switch boxes, as it says saving...do not turn off the power, turn it off. when you turn the power back on, you should be back in the lab, pick a different pokemon this time (the one you picked before will be in the box) do this again, putting both the pokemon in the box and switching boxes, then grab the last pokemon and there you have all 3.I've done it it does work.

Go to the grassy areas between cherrygrove and violet. Use a repel and put a pokemon about 38-39 in front. Walk around, if there's nothing go up to the northern cave and right back. The dogs move every time you do this so eventually they'll be where you are