unanswered How do I add overworld sprites to B and W

[Awegamer2015]

I'm trying to make a pokemon hack called Pokemon Bolt Black Version. But how do I add overworld sprites, I want to put the Kanto and Johto Gym Leaders and all of the legendary pokemon into the game.

Also, does anyone know a script to make a Pokemon appear after the Hall of Fame.

[Awegamer2015]

P.s I also want the hoenn and sinnon gym leaders too.