I got two, skarmory and forretress
Sassy or Relaxed nature
Evs: 252 HP/252 sp. def/ 4 def
Forretress already has a high defense, so we ev train it with sp. def, and having Strudy won't make it be KOed by a flamethrower, making it able to survive at least one hit and making it able to set up 1 hazard.
Jolly or Careful nature
Evs: 252 HP/136sp. Def/ 116 def/4 atk
Steel wing/ Brave Bird
Skarmory has high defense, decent sp. def, good atk, but low HP, so we give it max evs in HP. Steel wing or Brave bird for attacking moves, so when skarmory is taunted, it can still do something. Strudy for at least 1 hazard and custap berry to make it go first after Strudy is activated and do a ton of damage to the opponent after it set up 1 hazard and to do heavy damage before dieing.
I would personally suggest Skarmory, it is faster than Forrestress and can still play the same role.
Hope I helped!