1.Must be in NU tier
2.Has decent defense and attack
3.Can learn either Stealth Rock,Spikes,or Toxic Spikes
4.Can make a good lead pokemon
A rather common lead in nu as it has the ability to set up rocks with out being KOd by anything but cinccinos bullet seed.
Sturdy allows at least you able to set up rock then it has monster attack to tank with, being one of the hardest hitters in nu.
252hp 252atk 4def
Normal gem explosion with over 400 attack hurts.
Boulder Sexy (Regirock) @ Leftovers
Trait: Clear Body
EVs: 200 HP / 58 Atk / 252 SDef
Careful Nature (+SDef, -SAtk)
1. NU tier
2. 125 atk 100def
3. can learn stealth rock in platinum/HS/SS
4. good lead
. . .