Fearow was the most impressive. Gust->Quick Attack->Thunderbolt... still to strong to be caught->Gang attacked by the entire Pidgeotto herd AND Pidgeot. Thrice. It took somewhere around 60 attacks. Oh, and it's successful attack more or less oneshotted Pidgeotto.
Strongest non-legendary bird this series ever had, too bad it was too skow and got ganged up on.
How could that little weak link Arbok KO the pidgeotto who took down a Rhydon? One of the strongest rock Pokémon of the generation?
First off, Pidgeotto never took down Rhydon, he scored two hits, then his fight trailed of into nothingness, and Pikachu zapped it and all 5 of the pokemon Jessie used. Giovanni's mons ran.
Arbok(As an Arbok) was never weak during Kanto, it was defeated a total of 5 times:
Pikachu beat it alone three times, and the other three was by Dewgong and Pikachu tagteaming it AFTER it had already taken hits from several mons, and when it got gang assaulted by the entire Diglett/Dugtrio herd, and finally Pikachu and Sparky working together.
Oh, and Arbok during this season beat Pikachu in team with Squirtle once once, dominated Squirtle AND Horsea working together- Under water.
It was stronger than most of Ash's main team(only Zard and Pikachu was stronger).
what the hell ash!! Seriously, pidgeotto/Pidgeot was probably his strongest pokemon from Kanto, it took down Rhydon with a double edge!!
Charmander, in it's base form, was altogether stronger than Pidgeotto ever got. And again, Pikachu took out Rhydon.
Pidgeotto didn't actually win one fight since it beat that kids Rattata in episode 8.