When I first played my Red, I only trained my Charmander/Charmeleon and ended up owned by Misty.
I had a big pixel leak in my fat gray gameboy and I thought it was a pokemon and kept trying to chase it.
Another embarrassing incident, though my brother was responsible for this.
I let him play it for awhile. He thought that you were suppose to release Butterfree, like in the show, and he released my level 100 Butterfree, my first ever level 100. I almost became a murderer that day.