Hydreigon, The Brutal Pokémon. The heads on their arms do not have brains. They use all three heads to consume and destroy everything. It responds to movement by attacking. This scary, three-headed Pokémon devours everything in its path! This brutal Pokémon travels the skies on its six wings. Anything that moves seems like a foe to it, triggering its attack.
Hydreigon was one of the most powerful Pokémon in tier when it was released in BW, boosting impressive stats outside of its subpar speed. Hydreigon's power was further lifted with the release of move tutors in BW2 giving it a way around special walls such as Tyranitar and Chansey. However with the release of Fairies in XY Hydreigon was the primary Dragon to suffer boosting 4x weakness and resistance on both stab moves. While Hydreigon is still a powerhouse and should be respected for its raw power, it's a shadow of its past self similar to Flygon.
Levitate - Pokémon is immune to ground moves - Hydreigon's only ability and never a bad one, unless you're Rotom Fan. Gaining another immunity on top of its one to Psychic gives Hydreigon more free switch in options and it comes without the weakness to rock moves other pseudo legends have.
Eins, Zweis, Hydreigon
Very standard but for a reason. Life Orb or Expert Belt are great here as Life Orb is a spike to raw power, bar in mind Hydreigon is 5 base Special Attack off Latios, while the Expert Belt allows you to bluff a choices set, namely Scarf. Draco Meteor is your primary stab move, hitting so hard. Most soft threats are easily 2hkoed, some even with the stat drop while chunking non special walls. Dark Pulse is your other stab and a bit more spammable due to it not dropping Special Attack and being resisted by Fairy and Fighting-types. Here it gets a bit hectic as Hydreigon has one of the best viable movesets in the game. Superpower is a top slot move as it really hurts special walls, mostly the pink blobs Chansey and Blissey though and argument for Focus Blast can be made as well if you want more power for other threats like Mamoswine and Heatran. This argument reappears again with Earthquake or Earth Power, helping Hydreigon deal with the Nidoking/Nidoqueen and Tentacruel easier though the choice is personal. U-turn is an amazing move and always worth considering especially with the amount of pressure Hydreigon applies. Lastly Flash Cannon is an option to hit Fairies as they switch in but is probably the weaker of the choices. Other options include Dragon Pulse, Surf, Fire Blast, Roost, and Tailwind.
This set is really nice as it remedies Hydreigon's biggest problem, its subpar speed. 98 makes it fall behind the average speed tier by 2 points which cripples it almost as much as Fairies really. However the Choice Scarf allows Hydreigon to revenge kill threats easier and potential sweep with its base numbers. Draco Meteor and Dark Pulse are staple stab moves, Draco Meteor to just KO one threat before recalling or losing something while Dark Pulse is more spammable. Superpower is really nice but again, you have so many options here. Overall though Superpower is probably best in slot due to it being a strong reliable Fighting move. Lastly U-turn is an option to scout out threats and gain momentum while Dragon Pulse gives a spammable Dragon stab which is really nice to have.
Similar to how the Choice Scarf set fixes Hydreigon's low speed, the Choice Specs set forgoes that and focuses on one hitting threats or crippling things with its massive power. Draco Meteor is the more spammed move here as outside of Fairies and Steels most things will be 2HKOed. Dark Pulse is still great as it now hits Steels for neutral damage and doesn't come with the status drop. This is the only set that doesn't use Superpower favoring Focus Blast due to the plus 1 Special Attack. Dragon Pulse earns a mention as another coverage move in the 4th slot due to it being a non stat dropping Dragon stab. Other noteworthy moves include Fire Blast to decimate Steels and Grass threats, Flash Cannon to chunk Fairies, Earth Power for Fires and Rock threats, and lastly U-turn to scout and maintain momentum.
Other Options & Partners
-Assault Vest - A niche option but it gives you nice bulk making getting in easier, but you give up a lot of power doing it.
Teambuilding & Matchup
Building around Hydreigon you need to think and use a way to manage speed on the enemy team either through Tailwind, Sticky Web, or Paralyses. Most teams will flow better in a more offensive/bulky offensive style by Hydreigon can work on balanced, though more the Scarfed variant. Hydreigon also shines on Volt Turn team cores as it can just keep getting in for free and nuking threats or maintaining momentum itself with U-turn. Lastly you can use it in the type core Dark/Ghost/Fighting as it's fairly splashable for a Dark type due to its coverage options. In match ups Hydreigon struggles against other offensive teams due to its lower speed making it hard to find a way in to do its job. Ironically if Hydreigon can get in it will almost always removes something against offensive teams due to their relative frailness. Stall is a similar story but more that stuff is a bit too tanky and can wear down Hydreigon fast, especially with a Life Orb, but not as offensive.
VGC, Double, & Triple Battle Options
Hydreigon was a staple of VGC back in generation 5, but, like in singles, it has dropped off significantly with the introduction of Fairy-type Pokemon. Although it is not found in the Alolan Pokedex for VGC 2017, Hydreigon does still have some success in Battle Spot Doubles thanks to its power, good all-around stats, and strong coverage attacks.
Return to Darkness!
Max special attack and speed let Hydreigon utilize its high special attack and outspeed as much as possible. The final four EVs are put into Special Defense to give opposing Download Porygon2 an attack boost, but really they can go into any defensive stat. A Timid nature maximizes Hydreigon's speed, making it able to outspeed any (non-Choice Scarf) Tapu Lele. A Modest nature can be used for a bit more power, especially if you have reliable speed control on the team. Levitate is the only available ability, but a good one that makes Hydreigon immune to ground-type attacks from both your opponent and its teammate. The decision between Life Orb and Choice Specs of course comes down to whether you want to run Protect and be able to switch moves, or if you value extra damage with no recoil.
Dark Pulse is Hydreigon's strongest Dark-type attack, and can do massive damage to Pokemon like Cresselia and Aegislash. Draco Meteor is the strongest Dragon-type move, and although it has the nasty side effect of lowering special attack, it can be great to get off one huge attack (especially with your boosting item). Earth Power and Flamethrower round out Hydreigon's potential attacks, and both give great coverage. Earth Power has seen a higher usage on Battle Spot over Flamethrower due to its ability to hit Tapu Koko and Heatran hard, but Flamethrower is very strong against steel-types like Celesteela or Ferrothorn. Protect can still be very important for Hydreigon, allowing its teammate to take out a fairy-type threat or set up Tailwind.
Other Options & Team Ideas
-Darkinium Z is a popular choice currently on Battle Spot Doubles, turning Dark Pulse into a huge attack in Dark Hole Eclipse. The Dragon Z move may deserve some consideration, but it is much rarer, possibly due to the presence of Tapu Fini and its Misty Terrain.
Sylveon is a major one with its special bulk and fairy typing, allowing it to laugh at Hydreigon all day. Blissey isn't a lot better but Choice Specs does a number to the pink medic. Fighting types are a pain for Hydreigon as well lacking a Flying or Psychic move, and with most of the Musketeer trio in UU, most outpace it and can KO or almost before Hydreigon can retaliate. Conkeldurr deserves a note as well with its Assault Vest living Draco Meteor with ease and healing with Drain Punch, though Specs really is nasty to deal with again. Bulky waters can work as a more general answer but can be worn down fast, especially Rotom Wash and Tentacruel, though Vaporeon does a nice job. Lastly hazards can do a number as Hydreigon tends to play hit and run, though this is more for the Life Orb set as it stacks on recoil damage.
Locations in Games
Black 2/White 2:
Omega Ruby/Alpha Sapphire:
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