Description: Breed Aron and keep it at Level 1. For this to work properly it's a good idea to setup a Sandstorm ahead of time (preferably with Tyranitar or Hippowdon are favorable choices). The Shell Bell will fully heal Aron each time it attacks hereby resetting it's Sturdy ability for the next OHKO attempt.
Options: Any steel, rock, or ground Pokemon that is immune to Sandstorm are annoying since they won't take damage but if you hit em with a damaging move the next turn you should be okay.
Counters: The main issue this build faces are Multi-strike moves such as Doubleslap/Fury Swipes as it pretty much ignores Aron's Sturdy ability. Also beware of Hail.
This is a good moveset for aron (Pokemon #304) with the sturdy ability/trait, a Hardy nature, and equipped with Shell Bell submitted by Venustoise. For use in competitive Pokemon battles featuring an Export option and breeding guide.