- Hitmontop isn't so good Pokemon at speed and you should invest on attack and having priority moves.
- Having a great Attack / Defense / Sp. Defense, can make Hitmontop raises his attack with a ''status-move'', Hitmontop can learn Bulk Up and some priority moves to cover for his speed.
- His ability Technician is great because almost all priority moves has a BP less than 60, Intimidade can lower Attack by 1 to resist to some flying-type moves.
Hitmontop (M) @ Leftovers
EVs: 252 Atk / 80 Def / 176 SDef
Impish Nature (+Def, -SAtk)
- Bulk Up
- Triple Kick
- Bullet Punch
- Fake Out / Rapid Spin
Bulk Up raises Attack and Defense by 1, very important.
Triple Kick = 10 BP x3 = 30 x 1,5 (STAB) = 45 BP x 1,5 (Technician) = 67,5 x 1,5 (Bulk Up) = 101 BP or x2 (Bulk Up) = 135 BP.
Rapid Spin if you want to remove Stealth Rocks, Spikes, etc.. or Fake Out to revenge-kill low HP Pokemon.
Bullet Punch + Technician + Bulk Up + Priority can do great damage.
Hope this helps.