When I was little (grade 1 little) I got my first pokemon game which was pokemon heart gold on the DS. I wasn't that smart so I was only using my chikorita and got past the first gym somehow since it was a flying type gym. Then got mauled by the second gym. My second highest level pokemon was a pidgy which I trained to lvl 16 since thats the lvl my chikorita evolved at. I thought every pokemon evolved at that level. Anyway that pidgy won me the battle and I started using that pidgy only, end game I ended up with a lvl 100 pidgeot which I spammed with revives and full restores to beat red.