What Pokemon can you get on Pokemon LeafGreen that you cant on firered?

Answer 1

The first part of Pokemon LeafGreen and FireRed (before succsessfully defeating the Elite Four) you can the first 150 Pokemon. (Mew and Togepi are not included). The difference between the two, though, is in Leafgreen, you can get different Pokemon (like Sandshrew) and in FireRed you can only get certain Pokemon (like Growlithe). So, if you want all the Pokemon, you needd to train with a friend that has the opposite pair. The second part of the game, (after obtaining the National Dex) you can catch Johto Pokemon as well as Deoxys. Deoxys is actually hard to get though. You have to enter the code "LINK TOGETHER WITH ALL" on the Questionare at any Pokemon Mart. Now, when you open up the game, on the bottom it says "Mystery Gift". You need wireless connection to obtain the gift which is the "Aurora Pass". When you go to the Harbor in Vermillion City, you can then use the Aurora Pass to go to the island where Deoxys was born. I also heard you can catch Ho-oh and Lugia at Navel Rock but I've never tried so im not certain. Other then that, you can pretty much catch all the other the other Legendary Pokemon like the Legendary Birds and especially Mewtwo.