NeverUsed Physical Attacker
[email protected] Orb
4HP, 252 Atk, 252 SpD
Heavy Slam (covers 3 types one of them being fairy type, which is one of hariyama's weakness. plus, hariyama is REALLY heavy, making heavy slam a great option).
Cross Chop (i love this move, and it is great for Pokémon with guts. it's not innacurate, 80% isn't at all bad, and with 100 base power and guts it will deal a MASSIVE amount of damage)
Fake Out (gives you a free turn to activate flame orb).
Facade (gets boosted by guts, AND by the attack increase. 140 base power move with 558 atk deals MASSIVE damage).
Guts negates the attack drop of burn, and since we are playing this on GENERATION 7, burn only deals 1/16 of damage. with hariyama's great HP and investment in Sp. Defense, it will (most likely) hung on a special move (alright it can't hung on a moonblast from a maxed out Sp. Atk mega gardevoir, but still...) and then it can attack your opponent with MASSIVE STRONG moves.