Gamefreak is the developer for almost every Pokemon game. They are in every main Pokemon game in someway or form.
Game freak is probably remaking pokemon sapphire but in a better way
The NPC that represents an actual developer from Game Freak the creators of Pokemon give the player a Diploma item. The Diploma is an in-game certificate congratulating the player for completing the Pokedex. In Pokemon Sapphire onwards you can receive two Diplomas, one for completing the Regional Pokedex and another for completing the National Pokedex.
Nintendo Game Freak might be making a new Pokemon game after Pokemon Black and White and it will feature the Pokemon Kyurem. It'll be called Pokemon Grey. And also they might make a remake of the Pokemon Ruby, Sapphire and Emerald game on Nintendo DS
The company Game Freak specializes in the Nintendo exclusive Pokemon game series.
Game Freak is the name of the company that created Fire Red.
Pokemon Sapphire is a GBA game - since a DSi does not have the GBA slot unlike the regular DS or the lite, it cannot play Pokemon Sapphire.
You can't. You'd have to trade it from a Pokemon FireRed or LeafGreen game to get it in Sapphire.
Game Freak.
Pokemon Vortex is an online Pokemon game which is not affiliated with Game Freak, Pokemon, or Nintendo.
You can't catch Ditto in Pokemon Sapphire, but you can trade it to your game from Pokemon Emerald/FireRed/LeafGreen
As far as the game goes, you can't duplicate Pokemon on Sapphire. Tried it and it glitched up.
I don't think it evolves in Pokemon Sapphire or in any Pokemon game. Sorry to disappoint you if I did.