U Mad Bro?
Dusclops (M) @ Eviolite
Nature: Impish (+Def, -SpAtk)
- Pain Split
- Confuse Ray
His defenses (after IVs of 31, maxed out EVs, nature and Eviolite) are 591 and 538.
He has 2 immunities (Fighting & Normal).
He can stall out with Toxic and Pain Split. Confuse Ray is for extra annoyance.
You cannot KO this beast without some boosting of some sort.