Well, I see people are already putting suggestions up for Mt. Moon pokemon, so I figure I'll put forth my thoughts:
Zubat - Mynock: Vermin that loves to eat electrical parts, thats about it. Probably a good idea to keep him/her away from the Power Plant.
Geodude - The Boulder: Professional wrestler, always refers to himself in the third person and loves to show off his skills to the crowd.
Paras - Professor Snips (or Dr. Snips if it fits better) - A researcher who studies the effects of rare fungi. Due to a lack of volunteers, tests them on him/herself.