All Gym Leaders for the Pokemon Crystal rom hack: Pokemon Polished Crystal created by Rangi
Github For Polished Crystal: https://github.com/Rangi42/polishedcr...
"Polished Crystal is, as the title says, Crystal version but improved. I've had vague plans to make a Pokemon game for years, starting with a folder full of map drawings in middle school, but Mateo's Red++ inspired me to make this one, and I hope to do for Gen 2 what he's doing for Gen 1."
"The storyline is the same, you start in New Bark Town, beat the Johto gyms and the Elite Four, then move on to Kanto and fight Red. However, I've added new Pokemon, new moves, new mechanics, new maps, new events, new trainers, new items, new bugs, and Red is not even the end of the game. I've also moderately increased the difficulty, although this probably needs tuning."