I really like Beedrill honestly. It's probably one of the worst Bug Pokemon in the entire game, but man did it kick tail back in Red/Blue/Yellow. It was the only thing that could hit Mewtwo for super effective thanks to its Bug STAB (well...Leech Life Golbat too, but Golbat was amazing itself). Not only does it have the intimidating stinger, but it has stinger claws. People, honestly, if you don't stinger claws are amazing, you need to set your standards a little bit lower.