So I have a ios rom for platinum and I just beat the first gym (yay) and so I went to the lower level of the oreburgh gate place and I found a wild Golbat and I was shocked because I didn't know you could find Golbats there...

I ended up catching it and replacing the Zubat I had previously on my team, then I saved the game and looked up the appearance rate.

S H O O K E T H