Deck Knight
Blast Off At The Speed Of Light! That's Right!
Hariyama and Heracross are two entirely different beasts. Hariyama's job is essentially to switch into Dark types and go "Hai I'm here to LOL at ur moves." Hariyama with HP/Def builds laughs at TTar.
Knock Off and Whirlwind are both excellent moves on Hariyama. Knock Off moreso now because when Kazam switches in on a Hari Sub, while it isn't even close to a 3HKO on most Kazam spreads, it sure beats the heck out of the 2% or so it used to do. Gengar similarly does not like switching in to eat a Knock Off. Both of these pokemon can barely survive a powerful attack at 100% HP, shave off even 20% and they are much easier to dispatch. Losing thier item can also be a good nerf, Trick Kazam fails if it's item gets knocked off before it tricks, and a Leftovers-free Gengar eventually dies from attrition rather than using good switchins and Hypnosis to recover.
Knock Off and Whirlwind are both excellent moves on Hariyama. Knock Off moreso now because when Kazam switches in on a Hari Sub, while it isn't even close to a 3HKO on most Kazam spreads, it sure beats the heck out of the 2% or so it used to do. Gengar similarly does not like switching in to eat a Knock Off. Both of these pokemon can barely survive a powerful attack at 100% HP, shave off even 20% and they are much easier to dispatch. Losing thier item can also be a good nerf, Trick Kazam fails if it's item gets knocked off before it tricks, and a Leftovers-free Gengar eventually dies from attrition rather than using good switchins and Hypnosis to recover.