Upon my return to SPPF (and wowzers, you kept me in), I decided to enhance on Crushon, if you look at the last page you'll see what I mean.
CrushonTM and HM when I can be bothered
The Crushing Iron Pokémon
Crushons have different personalities to Lairon in many ways, not least because they aren't as strong as Aggron, and dream to be like Aggron in many ways.
From Lairon if holding Quick Claw, Weakening Boots, or Shell Bell
(as you can see, Crushon is designed to be more of a tactical Pokémon)