Duplicate Code First, have 6 Pokemons. Among of them, one is that you want to copied (you can't copy one with a HM or TM ability), and the one that is to be overwritten. Place the Pokemon to be copied at the bottom. Put 5 Pokemon in your PC without the Pokemon to be multiplized. Take 4 Pokemon of the five from your PC. Make sure that you have the one to be overwritten. Place Pokemon to be overwritten at the bottom spot and the Pokemon to be copied at the top. Push the start button and go to the items menu. Push select on the 6th item. Then push the B button twice. Go into a wild Pokemon battle. When it starts, send out the 6th Pokemon (to be overwritten). It will then disappear from display. Push the B button and select run away. Go to the Pokemon Daycare. The daycare guy will ask you if you want a pokemon back. Take the pokemon he offers back. It is the same pokemon you got is the same as the 1st Pokemon. How to get MissingNo.# 000 First go to Cinnabar Island then trade with anyone in the Pokemon Lab. Then go to the east of the island and then use the Surf ability and Surf where the land meets the water. MissingNo. will appear after a while the battle screen will appear but will be delayed about 5 sec. Warning: MissingNo. might mess up your game if it happens Toss MissingNo. the game will return to normal after that.