To answer a certain someone’s question, I’m gonna share my thoughts on breeding a proper Aron.
Impish, hands down, The Aggron families best asset is their defense, so impish nature is perfect seeing as how it raises your defense and lowers your Sp. Attack, so make sure you stick to physical moves.
Every IV except Sp. Attack, but if you don’t feel like dealing with all that mess then at least get proper IV’s in Aron’s Defense and Attack.
“Rock Head” this one is great if you’re really set on learning Double Edge or Breeding over Rock Head, and is easiest to work with out of the 3.
“Sturdy” Don’t bother.
“Heavy Metal” If you’re feeling especially adventurous this is the ability for you. Don’t quote me on this but I believe because Aggron is able to have this ability it makes him the most aggressive with the addition of the move “Heavy Slam.”
The only move I can really see being of most use to Aggron in its egg moves is Head Smash but again only if it has Rock Head. You can breed Head Smash to Aron with either a Rampardos, Tyrantrum or a Nidoking if it already has it bred into it.
I’m just going to list three options to top it all off
-Super Power/ Aqua Tail/ Dragon Claw
-Super Power/ Aqua Tail/ Dragon claw
-You can get Super Power by breeding it with a Drudigon, you can also prevent the stat drop by giving Aggron a White Herb.
-You can get Aqua Tail from a move tutor in B2&W2 by trading shards but that’s somewhat difficult to accomplish.
If I messed up anywhere or forgot anything just lemme know.