Home › Pokédex › Zweilous
#0634 · Generation V

Zweilous

Dark / Dragon · Hostile Pokémon — first seen in Generation V.

Showing the official games. Pick a ROM hack to see how it changes this Pokémon, or compare all of them.

Base stats

StatBaseMinMax
HP72
254348
Attack85
157295
Defense70
130262
Sp. Attack65
121251
Sp. Defense70
130262
Speed58
108236
Total420

Min and max are at level 100: the minimum is 0 IVs, 0 EVs and a hindering nature, the maximum 31 IVs, 252 EVs and a beneficial nature. Shedinja's HP is always 1 whatever the formula says.

Type defences

Damage Zweilous takes from each attacking type.

×4
Fairy
×2
FightingBugIceDragon
×½
GhostFireWaterGrassElectricDark
×0
Psychic
×1
NormalFlyingPoisonGroundRockSteel

Evolution

Methods are the current official ones. A ROM hack may change them — trade evolutions especially; the guide table below says which do.

In the ROM hacks it evolves differently

Each guide's own line, in the words its creator published.

Moves by official game

Level-up, TM/HM, tutor and egg moves exactly as each game has them. The newest game this site covers is open; the rest fold out.

Ultra Sun / Ultra Moon18 level-up · 25 TM/HM · 12 tutor

Level-up

LvMoveTypeCat.PowerAcc.PP
1BiteDarkPhysical60100%25
1Dragon RageDragonSpecial—100%10
1Focus EnergyNormalStatus——30
1Double HitNormalPhysical3590%10
4Focus EnergyNormalStatus——30
9BiteDarkPhysical60100%25
12HeadbuttNormalPhysical70100%15
17Dragon BreathDragonSpecial60100%20
20RoarNormalStatus——20
25CrunchDarkPhysical80100%15
28SlamNormalPhysical8075%20
32Dragon PulseDragonSpecial85100%10
38Work UpNormalStatus——30
42Dragon RushDragonPhysical10075%10
48Body SlamNormalPhysical85100%15
55Scary FaceNormalStatus—100%10
64Hyper VoiceNormalSpecial90100%10
71OutrageDragonPhysical120100%10

TM & HM

TMMoveTypeCat.PowerAcc.PP
TM01Work UpNormalStatus——30
TM05RoarNormalStatus——20
TM06ToxicPoisonStatus—90%10
TM10Hidden PowerNormalSpecial60100%15
TM100ConfideNormalStatus——20
TM11Sunny DayFireStatus——5
TM12TauntDarkStatus—100%20
TM17ProtectNormalStatus——10
TM18Rain DanceWaterStatus——5
TM21FrustrationNormalPhysical—100%20
TM27ReturnNormalPhysical—100%20
TM32Double TeamNormalStatus——15
TM41TormentDarkStatus—100%15
TM42FacadeNormalPhysical70100%20
TM44RestPsychicStatus——5
TM45AttractNormalStatus—100%15
TM46ThiefDarkPhysical60100%25
TM48RoundNormalSpecial60100%15
TM73Thunder WaveElectricStatus—90%20
TM77Psych UpNormalStatus——10
TM82Dragon TailDragonPhysical6090%10
TM87SwaggerNormalStatus—85%15
TM88Sleep TalkNormalStatus——10
TM90SubstituteNormalStatus——10
TM97Dark PulseDarkSpecial80100%15

Move tutor

MoveTypeCat.PowerAcc.PP
SnoreNormalSpecial50100%15
SpiteGhostStatus—100%10
OutrageDragonPhysical120100%10
UproarNormalSpecial90100%10
SuperpowerFightingPhysical120100%5
Hyper VoiceNormalSpecial90100%10
Shock WaveElectricSpecial60—20
Aqua TailWaterPhysical9090%10
Dragon PulseDragonSpecial85100%10
Earth PowerGroundSpecial90100%10
Zen HeadbuttPsychicPhysical8090%15
Draco MeteorDragonSpecial13090%5
Sun / Moon18 level-up · 25 TM/HM · 1 tutor

Level-up

LvMoveTypeCat.PowerAcc.PP
1BiteDarkPhysical60100%25
1Dragon RageDragonSpecial—100%10
1Focus EnergyNormalStatus——30
1Double HitNormalPhysical3590%10
4Focus EnergyNormalStatus——30
9BiteDarkPhysical60100%25
12HeadbuttNormalPhysical70100%15
17Dragon BreathDragonSpecial60100%20
20RoarNormalStatus——20
25CrunchDarkPhysical80100%15
28SlamNormalPhysical8075%20
32Dragon PulseDragonSpecial85100%10
38Work UpNormalStatus——30
42Dragon RushDragonPhysical10075%10
48Body SlamNormalPhysical85100%15
55Scary FaceNormalStatus—100%10
64Hyper VoiceNormalSpecial90100%10
71OutrageDragonPhysical120100%10

TM & HM

TMMoveTypeCat.PowerAcc.PP
TM01Work UpNormalStatus——30
TM05RoarNormalStatus——20
TM06ToxicPoisonStatus—90%10
TM10Hidden PowerNormalSpecial60100%15
TM100ConfideNormalStatus——20
TM11Sunny DayFireStatus——5
TM12TauntDarkStatus—100%20
TM17ProtectNormalStatus——10
TM18Rain DanceWaterStatus——5
TM21FrustrationNormalPhysical—100%20
TM27ReturnNormalPhysical—100%20
TM32Double TeamNormalStatus——15
TM41TormentDarkStatus—100%15
TM42FacadeNormalPhysical70100%20
TM44RestPsychicStatus——5
TM45AttractNormalStatus—100%15
TM46ThiefDarkPhysical60100%25
TM48RoundNormalSpecial60100%15
TM73Thunder WaveElectricStatus—90%20
TM77Psych UpNormalStatus——10
TM82Dragon TailDragonPhysical6090%10
TM87SwaggerNormalStatus—85%15
TM88Sleep TalkNormalStatus——10
TM90SubstituteNormalStatus——10
TM97Dark PulseDarkSpecial80100%15

Move tutor

MoveTypeCat.PowerAcc.PP
Draco MeteorDragonSpecial13090%5
Omega Ruby / Alpha Sapphire18 level-up · 28 TM/HM · 12 tutor

Level-up

LvMoveTypeCat.PowerAcc.PP
1BiteDarkPhysical60100%25
1Dragon RageDragonSpecial—100%10
1Focus EnergyNormalStatus——30
1Double HitNormalPhysical3590%10
4Focus EnergyNormalStatus——30
9BiteDarkPhysical60100%25
12HeadbuttNormalPhysical70100%15
17Dragon BreathDragonSpecial60100%20
20RoarNormalStatus——20
25CrunchDarkPhysical80100%15
28SlamNormalPhysical8075%20
32Dragon PulseDragonSpecial85100%10
38Work UpNormalStatus——30
42Dragon RushDragonPhysical10075%10
48Body SlamNormalPhysical85100%15
55Scary FaceNormalStatus—100%10
64Hyper VoiceNormalSpecial90100%10
71OutrageDragonPhysical120100%10

TM & HM

TMMoveTypeCat.PowerAcc.PP
TM05RoarNormalStatus——20
TM06ToxicPoisonStatus—90%10
TM10Hidden PowerNormalSpecial60100%15
TM100ConfideNormalStatus——20
TM11Sunny DayFireStatus——5
TM12TauntDarkStatus—100%20
TM17ProtectNormalStatus——10
TM18Rain DanceWaterStatus——5
TM21FrustrationNormalPhysical—100%20
TM27ReturnNormalPhysical—100%20
TM32Double TeamNormalStatus——15
TM41TormentDarkStatus—100%15
TM42FacadeNormalPhysical70100%20
TM44RestPsychicStatus——5
TM45AttractNormalStatus—100%15
TM46ThiefDarkPhysical60100%25
TM48RoundNormalSpecial60100%15
TM59IncinerateFireSpecial60100%15
TM73Thunder WaveElectricStatus—90%20
TM77Psych UpNormalStatus——10
TM82Dragon TailDragonPhysical6090%10
TM87SwaggerNormalStatus—85%15
TM88Sleep TalkNormalStatus——10
TM90SubstituteNormalStatus——10
TM94Secret PowerNormalPhysical70100%20
TM97Dark PulseDarkSpecial80100%15
HM04StrengthNormalPhysical80100%15
HM06Rock SmashFightingPhysical40100%15

Move tutor

MoveTypeCat.PowerAcc.PP
SnoreNormalSpecial50100%15
SpiteGhostStatus—100%10
OutrageDragonPhysical120100%10
UproarNormalSpecial90100%10
SuperpowerFightingPhysical120100%5
Hyper VoiceNormalSpecial90100%10
Shock WaveElectricSpecial60—20
Aqua TailWaterPhysical9090%10
Dragon PulseDragonSpecial85100%10
Earth PowerGroundSpecial90100%10
Zen HeadbuttPsychicPhysical8090%15
Draco MeteorDragonSpecial13090%5
X / Y18 level-up · 27 TM/HM · 1 tutor

Level-up

LvMoveTypeCat.PowerAcc.PP
1BiteDarkPhysical60100%25
1Dragon RageDragonSpecial—100%10
1Focus EnergyNormalStatus——30
1Double HitNormalPhysical3590%10
4Focus EnergyNormalStatus——30
9BiteDarkPhysical60100%25
12HeadbuttNormalPhysical70100%15
17Dragon BreathDragonSpecial60100%20
20RoarNormalStatus——20
25CrunchDarkPhysical80100%15
28SlamNormalPhysical8075%20
32Dragon PulseDragonSpecial85100%10
38Work UpNormalStatus——30
42Dragon RushDragonPhysical10075%10
48Body SlamNormalPhysical85100%15
55Scary FaceNormalStatus—100%10
64Hyper VoiceNormalSpecial90100%10
71OutrageDragonPhysical120100%10

TM & HM

TMMoveTypeCat.PowerAcc.PP
TM05RoarNormalStatus——20
TM06ToxicPoisonStatus—90%10
TM10Hidden PowerNormalSpecial60100%15
TM100ConfideNormalStatus——20
TM11Sunny DayFireStatus——5
TM12TauntDarkStatus—100%20
TM17ProtectNormalStatus——10
TM18Rain DanceWaterStatus——5
TM21FrustrationNormalPhysical—100%20
TM27ReturnNormalPhysical—100%20
TM32Double TeamNormalStatus——15
TM41TormentDarkStatus—100%15
TM42FacadeNormalPhysical70100%20
TM44RestPsychicStatus——5
TM45AttractNormalStatus—100%15
TM46ThiefDarkPhysical60100%25
TM48RoundNormalSpecial60100%15
TM59IncinerateFireSpecial60100%15
TM73Thunder WaveElectricStatus—90%20
TM77Psych UpNormalStatus——10
TM82Dragon TailDragonPhysical6090%10
TM87SwaggerNormalStatus—85%15
TM88Sleep TalkNormalStatus——10
TM90SubstituteNormalStatus——10
TM94Rock SmashFightingPhysical40100%15
TM97Dark PulseDarkSpecial80100%15
HM04StrengthNormalPhysical80100%15

Move tutor

MoveTypeCat.PowerAcc.PP
Draco MeteorDragonSpecial13090%5
Black 2 / White 218 level-up · 25 TM/HM · 13 tutor

Level-up

LvMoveTypeCat.PowerAcc.PP
1BiteDarkPhysical60100%25
1Dragon RageDragonSpecial—100%10
1Focus EnergyNormalStatus——30
1Double HitNormalPhysical3590%10
4Focus EnergyNormalStatus——30
9BiteDarkPhysical60100%25
12HeadbuttNormalPhysical70100%15
17Dragon BreathDragonSpecial60100%20
20RoarNormalStatus——20
25CrunchDarkPhysical80100%15
28SlamNormalPhysical8075%20
32Dragon PulseDragonSpecial85100%10
38Work UpNormalStatus——30
42Dragon RushDragonPhysical10075%10
48Body SlamNormalPhysical85100%15
55Scary FaceNormalStatus—100%10
64Hyper VoiceNormalSpecial90100%10
71OutrageDragonPhysical120100%10

TM & HM

TMMoveTypeCat.PowerAcc.PP
TM05RoarNormalStatus——20
TM06ToxicPoisonStatus—90%10
TM10Hidden PowerNormalSpecial60100%15
TM11Sunny DayFireStatus——5
TM12TauntDarkStatus—100%20
TM17ProtectNormalStatus——10
TM18Rain DanceWaterStatus——5
TM21FrustrationNormalPhysical—100%20
TM27ReturnNormalPhysical—100%20
TM32Double TeamNormalStatus——15
TM41TormentDarkStatus—100%15
TM42FacadeNormalPhysical70100%20
TM44RestPsychicStatus——5
TM45AttractNormalStatus—100%15
TM46ThiefDarkPhysical60100%25
TM48RoundNormalSpecial60100%15
TM59IncinerateFireSpecial60100%15
TM73Thunder WaveElectricStatus—90%20
TM77Psych UpNormalStatus——10
TM82Dragon TailDragonPhysical6090%10
TM83Work UpNormalStatus——30
TM87SwaggerNormalStatus—85%15
TM90SubstituteNormalStatus——10
TM94Rock SmashFightingPhysical40100%15
HM04StrengthNormalPhysical80100%15

Move tutor

MoveTypeCat.PowerAcc.PP
SnoreNormalSpecial50100%15
SpiteGhostStatus—100%10
OutrageDragonPhysical120100%10
Sleep TalkNormalStatus——10
UproarNormalSpecial90100%10
SuperpowerFightingPhysical120100%5
Hyper VoiceNormalSpecial90100%10
Dark PulseDarkSpecial80100%15
Aqua TailWaterPhysical9090%10
Dragon PulseDragonSpecial85100%10
Earth PowerGroundSpecial90100%10
Zen HeadbuttPsychicPhysical8090%15
Draco MeteorDragonSpecial13090%5
Black / White18 level-up · 25 TM/HM · 1 tutor

Level-up

LvMoveTypeCat.PowerAcc.PP
1BiteDarkPhysical60100%25
1Dragon RageDragonSpecial—100%10
1Focus EnergyNormalStatus——30
1Double HitNormalPhysical3590%10
4Focus EnergyNormalStatus——30
9BiteDarkPhysical60100%25
12HeadbuttNormalPhysical70100%15
17Dragon BreathDragonSpecial60100%20
20RoarNormalStatus——20
25CrunchDarkPhysical80100%15
28SlamNormalPhysical8075%20
32Dragon PulseDragonSpecial85100%10
38Work UpNormalStatus——30
42Dragon RushDragonPhysical10075%10
48Body SlamNormalPhysical85100%15
55Scary FaceNormalStatus—100%10
64Hyper VoiceNormalSpecial90100%10
71OutrageDragonPhysical120100%10

TM & HM

TMMoveTypeCat.PowerAcc.PP
TM05RoarNormalStatus——20
TM06ToxicPoisonStatus—90%10
TM10Hidden PowerNormalSpecial60100%15
TM11Sunny DayFireStatus——5
TM12TauntDarkStatus—100%20
TM17ProtectNormalStatus——10
TM18Rain DanceWaterStatus——5
TM21FrustrationNormalPhysical—100%20
TM27ReturnNormalPhysical—100%20
TM32Double TeamNormalStatus——15
TM41TormentDarkStatus—100%15
TM42FacadeNormalPhysical70100%20
TM44RestPsychicStatus——5
TM45AttractNormalStatus—100%15
TM46ThiefDarkPhysical60100%25
TM48RoundNormalSpecial60100%15
TM59IncinerateFireSpecial60100%15
TM73Thunder WaveElectricStatus—90%20
TM77Psych UpNormalStatus——10
TM82Dragon TailDragonPhysical6090%10
TM83Work UpNormalStatus——30
TM87SwaggerNormalStatus—85%15
TM90SubstituteNormalStatus——10
TM94Rock SmashFightingPhysical40100%15
HM04StrengthNormalPhysical80100%15

Move tutor

MoveTypeCat.PowerAcc.PP
Draco MeteorDragonSpecial13090%5

Where to find it in the official games

Every area in the 16 official games on this site that has it, from each game's own encounter tables.

In the wild

GameAreaMethodLevelsRate
Black 2 / White 2Victory RoadGrass49-5020%
X / YVictory Road rareGrass595%

Where to find it in the ROM hacks

18 guides on this site put it somewhere you can catch it. Areas link to that guide's own route page, with its own rates and levels.

GuideWhere
Unbound
Crystal Peak 1F Left RoomLand · Lv 50-53 · 10%
Crystal Peak 1F Main RoomLand · Lv 50-53 · 10%
Crystal Peak 3FLand · Lv 50-53 · 10%
and 4 more areas
Emerald Rogue
Cave 0 — HoennDragon-theme rooms · Lv —
Mountain 1 — HoennDark-theme rooms · Lv —
Mountain 3 — HoennDragon-theme rooms · Lv —
and 9 more areas
Infinite Fusion
Victory RoadCave (Remix) · Lv 44 · 5%rare
Victory Road (area 2)Cave (Remix) · Lv 44 · 5%rare
Victory Road (area 3)Cave (Remix) · Lv 44 · 5%rare
and 1 more area
Sword and Shield Ultimate Plus
Wild Area 7 (Ice) EastRaid Den · Lv — · 2
Wild Area 7 (Ice) WestRaid Den · Lv — · 2
Wild Area 8 (Spooky)Grass · Lv — · 10%
and 2 more areas
Blaze Black 2 Redux & Volt White 2 Redux
Victory Road - Connecting Caves IIGrass · Lv 59-62 · 5%rare
Pokémon Phoenix Red
Rock Tunnel 1FGrass · Lv 24 · 10%
Elite Redux
Meteor Falls 1F 2RGrass · Lv — · 10%
Meteor Falls B1F 1RGrass · Lv — · 10%
Scorched Slab B1FGrass · Lv — · 10%
Inclement Emerald
Meteor FallsGrass · Lv Scales · 10%
Meteor FallsGrass · Lv Scales · 10%
Scorched SlabGrass · Lv Scales · 10%
and 1 more area
Pokémon Ambrosia
Route 45Grass (night) · Lv 30 · 24%
Pokémon Emerald Imperium
Route 122Grass · Lv 40-42 · 2%rare
Meteor Falls B1F Room 2Grass · Lv 50-55 · 5%rare
Pokémon Emerald Squared
Meteor Falls B1F 2RLand · Lv 24-34 · 5%
Meteor Falls 1F 1RLand · Lv 24-34 · 5%
Meteor Falls 1F 2RLand · Lv 24-34 · 5%
and 2 more areas
Pokémon Tourmaline
Isshoan
Location not publishedNo location published · Lv —
Blaze Black 2 & Volt White 2
Victory Road - Inside Caves Part IICave — Dragons · Lv 58 · 10%
Rising Ruby & Sinking Sapphire
Meteor Falls 1F-2Walking · Lv 59
Meteor Falls B1FWalking · Lv 59
Meteor Falls B1F-2Walking · Lv 59
Blaze Black & Volt White
Challenger’s Cave — B2FCave · Lv — · 10%
Pokémon Platinum Redux
Hidden CaveGrass · Lv ? · 14%
Veilstone HousePalmer · Lv ?
Pokémon Saiph 2
Volcano CaveWalking · Lv 48-50 · 1%rare
Pokémon Mirror Gold
Route 7Grass (Night) · Lv 58-60 · 26%
Pokémon Soulgoldnot in the wild in this guide's tables — evolve, trade or battle it
Pokémon Heart & Soulnot in the wild in this guide's tables — evolve, trade or battle it
Pokémon R.O.W.Enot in the wild in this guide's tables — evolve, trade or battle it
Radical Rednot in the wild in this guide's tables — evolve, trade or battle it
Pokémon Crippling Medical Debt Editionnot in the wild in this guide's tables — evolve, trade or battle it
Pokémon Emerald Exnot in the wild in this guide's tables — evolve, trade or battle it
Blinding White Plusnot in the wild in this guide's tables — evolve, trade or battle it
Pokémon Too Many Types 1not in the wild in this guide's tables — evolve, trade or battle it
Pokémon: Wishes of Tomorrownot in the wild in this guide's tables — evolve, trade or battle it
Pokémon Exceedednot in the wild in this guide's tables — evolve, trade or battle it
Pokémon Project: Pinot in the wild in this guide's tables — evolve, trade or battle it
Pokémon Omega Ruby Originsnot in the wild in this guide's tables — evolve, trade or battle it
Poke47not in the wild in this guide's tables — evolve, trade or battle it
HeartGold Generationsnot in the wild in this guide's tables — evolve, trade or battle it
Pokémon Parallel Emeraldnot in the wild in this guide's tables — evolve, trade or battle it
Pokémon Black Pearl Emeraldnot in the wild in this guide's tables — evolve, trade or battle it
Pokémon Overcomplicatednot in the wild in this guide's tables — evolve, trade or battle it

Compare official Zweilous with the ROM hacks →

In the 34 guides that include it

Changed in 30 of 34 guides: retyped in 2, stats in 9, abilities in 9, evolution in 26.

Every ROM hack on this site that has Zweilous, and what it did to it. Guides that changed something are first. Click one for that version's full page — locations, moveset and TMs.

GuideTypeTotalAbilities
Unbound
Evolves into Hydreigon at level 64
ChangedDarkDragon420Hustle
Pokémon Soulgold
Evolves into Hydreigon — Level 64
ChangedDarkDragon420Hustle
Pokémon Heart & Soul
Evolves into Hydreigon at Level 64
ChangedDarkDragon420Hustle
Infinite Fusion
Evolves into: Hydreigon (Level 64)
ChangedDarkDragon420Hustle, Hustle
Pokémon R.O.W.E
Evolves into Hydreigon at Level 55
ChangedDarkDragon420Hustle, Regenerator
+ Regenerator
Sword and Shield Ultimate Plus
Evolves into Hydreigon — Level 64
ChangedDarkDragon420Hustle
Blaze Black 2 Redux & Volt White 2 Redux
evolves into Hydreigon at Level 58
ChangedDarkDragon420Hustle, Hustle
Pokémon Phoenix Red
Evolves into Hydreigon at Level 42
ChangedDarkDragon495 +75
+10 HP, -15 Attack, +5 Defense, +40 Sp. Atk, +10 Sp. Def, +25 Speed
Inner Focus
+ Inner Focus − Hustle
Radical Red
Evolves into Hydreigon at Level 59
ChangedDarkDragon420Hustle
Elite Redux
Evolves into Hydreigon at level 50
ChangedDarkDragon420
-20 Attack, +20 Sp. Atk
Hustle, Sheer Force, Moody
Inclement Emerald
Evolves into Hydreigon at Level 54
ChangedDarkDragon420Hustle
Pokémon Ambrosia
Evolves into Hydreigon at level 50
ChangedDarkDragon420
-20 Attack, +20 Sp. Atk
Boosted Accuracy, Taunts foe
Pokémon Crippling Medical Debt Edition
Evolves into Hydreigon at Level 64
Changed0 -420
-72 HP, -85 Attack, -70 Defense, -65 Sp. Atk, -70 Sp. Def, -58 Speed
—
Blinding White Plus
Evolves at Level 60
ChangedDarkDragon490 +70
-17 HP, +20 Attack, +40 Sp. Atk, +27 Speed
Hustle, Defeatist
+ Defeatist
Pokémon Too Many Types 1ChangedDarkDragon→AngyDragonGuys420—
Pokémon Emerald Imperium
Evolves into Hydreigon at level 59
ChangedDarkDragon420Hustle
Pokémon: Wishes of Tomorrow
Evolves into Hydreigon at Level 64
ChangedDarkDragon420Hustle
Pokémon Exceeded
Evolves into Hydreigon at level 64
ChangedDarkDragon420Hustle
Pokémon Emerald Squared
Evolves into Hydreigon at level 48
ChangedDarkDragon420Hustle, Twincast
+ Twincast
Blaze Black 2 & Volt White 2ChangedDarkDragon420Hustle, Hustle
Blaze Black & Volt WhiteChangedDarkDragon420Hustle, Intimidate
+ Intimidate
Pokémon Project: Pi
Evolves into Hydreigon at level 60
ChangedDarkDragon405 -15
-3 HP, -3 Attack, -2 Defense, -2 Sp. Atk, -2 Sp. Def, -3 Speed
Hustle
Pokémon Omega Ruby Origins
Evolves into Hydreigon at Level 64
ChangedDarkDragon420Hustle
Poke47
Evolves from Deino — Level up: 40
Evolves into Hydreigon — Level up: 54
ChangedDarkDragon440 +20
+20 Defense
Grand Hydra, Strong Jaw
+ Grand Hydra, Strong Jaw − Hustle
HeartGold Generations
Evolves into Hydreigon — at level 45
ChangedDarkDragon420Hustle
Pokémon Platinum Redux
Evolves at Lv. 48. The documentation gives the level but not what it turns into
ChangedDarkDragon→DragonDark450 +30
+9 HP, -15 Attack, +2 Defense, +10 Sp. Atk, +11 Sp. Def, +13 Speed
Hustle
Pokémon Saiph 2Changed0 -420
-72 HP, -85 Attack, -70 Defense, -65 Sp. Atk, -70 Sp. Def, -58 Speed
—
Pokémon Parallel Emerald
Evolves into Hydreigon at level 64
ChangedDarkDragon420Hustle
Pokémon Black Pearl Emerald
Evolves into Hydreigon at Level 64
ChangedDarkDragon420Hustle
Pokémon Mirror Gold
Evolves into Hydreigon — at level 40
ChangedDarkDragon420Hustle
Emerald RogueUnchangedDarkDragon420Hustle
Pokémon Emerald ExUnchangedDarkDragon420—
Rising Ruby & Sinking SapphireUnchangedDarkDragon420Hustle
Pokémon OvercomplicatedUnchangedDarkDragon420Clear Body, Intimidate

Pokédex entries

What each game says about it, in the games' own words.

Black / Y / Alpha SapphireAfter it has eaten up all the food in its territory, it moves to another area. Its two heads do not get along.
WhiteSince their two heads do not get along and compete with each other for food, they always eat too much.
Black 2 / White 2 / X / Omega RubyThe two heads do not get along. Whichever head eats more than the other gets to be the leader.

Names in other languages

Japaneseジヘッド
Japanese (Rōmaji)Dihead
GermanDuodino
FrenchDiamat
SpanishZweilous
ItalianZweilous
Korean디헤드
Chinese (Simplified)双首暴龙
Chinese (Traditional)雙首暴龍

Official data here is present-day reference data from PokéAPI, not a snapshot of any one game's era — the Fairy type and hidden abilities arrived partway through the series, so a difference against an older game can belong to the series rather than to that ROM hack.