Fabulous Ampharos
Pokemon Breeder :3
Chikorita line, love the designs but in the GSC/HGSS games, it's arguably the worst starter line due to the sole nature of being walled by trainers including Silver, Falkner, Bugsy, Morty, Jasmine, Pryce, Clair, Koga, Karen and Lance. Sure you can rely on other teammates to help it but the level grinding is horrid.
Personally, Seedot is worse.
I really never had a problem with any of the trainers.