Hello! I suppose that I have more than one question in this topic so I'll list them one by one.
1 Can you transfer the legendaries you encounter in Guardian Signs, such as Palkia and Latios?
2 Can you trade from RED to Sapphire with a cable? If so, what gender will they be? Pokemon in RED are genderless.
3 Some tips for defeating RED's elite four and the champion (AKA, your rival). I can't seem to defeat Charizard.
That's all! if you can only answer one of them, label your answer. Thanks!!