Zweilous is technically a pre-evolution of Hydreigon, but it holds its own in formats where Eviolite is allowed. Psychic moves can't touch it, which offsets the 5 weaknesses somewhat. Known as the Hostile Pokemon. Flexible enough to run physical or special sets.
Attack and HP carry most of Zweilous's stat budget. Speed's the obvious dump stat. Tough to catch and yields 2 Attack EVs. Follows a slow 1.25M XP grind.
The two heads do not get along at all. If you don’t give each head the same amount of attention, they’ll begin fighting out of jealousy.
The two heads have different likes and dislikes. Because the heads fight with each other, Zweilous gets stronger without needing to rely on others.
Zweilous Weakness
VulnerableType-wise, Zweilous takes extra damage from Fairy, Ice, Fighting, Bug, and Dragon. Watch out for Fairy attacks, those deal 4x damage. Psychic moves do nothing thanks to a full immunity. With 6 resistances, the defensive profile is strong.
Partway through Deino's chain. Zweilous still has another evolution ahead before reaching Hydreigon. For breeding, takes forever to hatch with plenty of partners via one egg group. HP has grown the most so far (+20), but there's still another 180 stats to gain in the final evolution.
How to Evolve
Breed with Zweilous to get Deino eggs using 65 partners from the Dragon egg group. Notable egg moves include Astonish, Belch, Double Hit and 1 more.
Hustle and Eviolite give Zweilous staying power beyond its evolution stage. Adamant nature boosts Attack, max HP and Attack EVs set the spread, and the pre-evolution bulk actually works here. Rest patches up chip damage.
Best Build
Best Zweilous Moveset
- Crunch
- Thunder Wave
- Rest
- Sleep Talk
Recommended Teammates
The egg pool carries weight here. Astonish and Belch aren't available any other way for Zweilous, and they meaningfully change what it threatens. Stack those on top of Draco Meteor and Outrage for solid options.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
moderate rates for Zweilous across 13 locations in endgame routes. Nothing complicated. Check the sorted list below, compare the top few options, and head to whichever is closest.
Where To Catch Zweilous in Scarlet & Violet
The path to Zweilous starts with Deino at Lv. 36-64 via walking encounters. 2 catchable stages total, with locations listed for each one below.
Step 1Catch DeinoEASYEast Province (Area One) - CaveOverworldLv.36-5415%LateRouteEASYEast Province (Area Three) - CaveOverworldLv.36-5415%LateRouteEASYGlaseado MountainOverworldLv.36-5415%LateCaveEASYGlaseado MountainOverworldLv.36-5415%LateCaveEASYNorth Province (Area One) - CaveOverworldLv.36-5415%LateRouteEASYNorth Province (Area Three) - CaveOverworldLv.36-5415%LateRouteEASYNorth Province (Area Two) - CaveOverworldLv.36-5415%LateRouteEASYSouth Province (Area One) - CaveOverworldLv.36-5415%LateRouteEASYSouth Province (Area Six) - CaveOverworldLv.36-5415%LateRouteEASYWest Province (Area One) - CaveOverworldLv.36-5415%LateRouteEASYWest Province (Area Three) - CaveOverworldLv.36-5415%LateRouteEASYWest Province (Area Two) - CaveOverworldLv.36-5415%LateRoute
Step 2Zweilous ✓MODERATEThe Great Crater of PaldeaOverworldLv.50-646%PostCHALLENGINGEast Province (Area One) - CaveOverworldLv.50-643%PostRouteCHALLENGINGEast Province (Area Three) - CaveOverworldLv.50-643%PostRouteCHALLENGINGGlaseado MountainOverworldLv.50-643%PostCaveCHALLENGINGGlaseado MountainOverworldLv.50-643%PostCaveCHALLENGINGNorth Province (Area One) - CaveOverworldLv.50-643%PostRouteCHALLENGINGNorth Province (Area Three) - CaveOverworldLv.50-643%PostRouteCHALLENGINGNorth Province (Area Two) - CaveOverworldLv.50-643%PostRouteCHALLENGINGSouth Province (Area One) - CaveOverworldLv.50-643%PostRouteCHALLENGINGSouth Province (Area Six) - CaveOverworldLv.50-643%PostRouteCHALLENGINGWest Province (Area One) - CaveOverworldLv.50-643%PostRouteCHALLENGINGWest Province (Area Three) - CaveOverworldLv.50-643%PostRouteCHALLENGINGWest Province (Area Two) - CaveOverworldLv.50-643%PostRouteor evolve from Deino (Step 1)
Zweilous is meant to evolve into Hydreigon. At 420 BST, the stats aren't there for competitive play yet. Pre-evolution Pokemon rarely hold up against fully evolved threats.
Zweilous's biggest threats include Gardevoir (Fairy), Kyurem (Ice), and Machamp (Fighting), all carrying super-effective STAB moves. Gardevoir is the most dangerous since Fairy moves deal 4x damage. Bug and Dragon-type attackers are also a problem. With 5 weakness types, most competitive teams carry at least one counter.
Hustle is the go-to ability for Zweilous. It strengthens physical moves to inflict 1.5× damage, but decreases their accuracy to 0.8×. It's Zweilous's only ability.
At base 58 Speed, it won't be moving first often. On offense, Zweilous is a physical attacker with base 85 Attack. Defensively? Enough bulk to take a hit or two.
Zweilous appears in 8 games, including Black & White, Black 2 & White 2, and X & Y.
Zweilous joined the series in Black & White and has been available in 8 titles so far. With 5 generations of appearances, it's established itself despite the later start.
- Gen IY
Yellow - Gen IRB
Red & Blue - Gen IIGS
Gold & Silver - Gen IIC
Crystal - Gen IIIRS
Ruby & Sapphire - Gen IIIFRLG
FireRed & LeafGreen - Gen IIIE
Emerald - Gen IVPt
Platinum - Gen IVHGSS
HeartGold & SoulSilver - Gen IVDP
Diamond & Pearl - Gen VBWDebut
Black & White - Gen VB2W2
Black 2 & White 2 - Gen VIXY
X & Y - Gen VIORAS
Omega Ruby & Alpha Sapphire - Gen VIIUSUM
Ultra Sun & Ultra Moon - Gen VIISM
Sun & Moon - Gen VIILGPE
Let's Go Pikachu & Eevee - Gen VIIISwSh
Sword & Shield - Gen VIIIPLA
Legends: Arceus - Gen VIIIBDSP
Brilliant Diamond & Shining Pearl - Gen IXSV
Scarlet & Violet - Gen IXLZA
Legends: Z-A