I recently installed a randomizer for Pokemon leaf green. My opinions for starters are Pichu, machop , or geodude. no matter how many times I restart it there is only those three Pokemon. Keep in mind that I’m doing a nuzlock and I will just cheat in the final forms of Geo dude and machop ( they require trading to evolve).
** Edit ** I’ve officially picked Pichu as my stater! Thanks for your help everyone