Special
Cannon
30Speed · Very Slow

Is Duosion Good in Sword & Shield Playthrough?

Duosion between Solosis and Reuniclus has AbilityMagic Guard already active. Psychic coverage handles Bea equivalent fights. Evolves at 41 into Reuniclus. Shield exclusive. Push through to the final form.

StrongGoodEvenToughBadGEEEEETETEMiloGym 1NessaGym 2KabuGym 3SolosisCatchableDuosionEvolveBeaGym 4OpalGym 5GordieGym 6ReuniclusEvolvePiersGym 7RaihanGym 8BedeGym 9LeonChamp*
Milo
Gym 1
Good

Solosis has the type edge here and should clean up Milo's team.

You Win
Gossifleur
Lv 19
Grass
Regenerator
Magical LeafRoundRapid Spin
Even
Eldegoss
Lv 20
Grass
Regenerator
Magical LeafLeafageRound
Nessa
Gym 2
Even

Solosis trades roughly evenly with Nessa's team.

You Win
Goldeen
Lv 22
Water
Swift Swim
Water PulseWhirlpoolHorn AttackAgility
Even
Arrokuda
Lv 23
Water
Swift Swim
Aqua JetBiteWhirlpoolFury Attack
Even
Drednaw
Lv 24
WaterRock
Swift Swim
Razor ShellWater GunBiteHeadbutt
Kabu
Gym 3
Even

Solosis trades roughly evenly with Kabu's team.

Even
Ninetales
Lv 25
Fire
Flash Fire
Will O WispFire SpinQuick AttackEmber
Even
Arcanine
Lv 25
Fire
Intimidate
Will O WispFlame WheelBiteAgility
Risky
Centiskorch
Lv 27
FireBug
Flash Fire
Flame WheelCoilBug BiteSmokescreen
Bea
Gym 4
Even

Duosion trades roughly evenly with Bea's team.

You Win
Hitmontop
Lv 34
Fighting
Technician
Triple KickQuick AttackCounterRevenge
Avoid
Pangoro
Lv 34
FightingDark
Mold Breaker
Bullet PunchCircle ThrowNight SlashWork Up
You Win
Sirfetchd
Lv 35
Fighting
Steadfast
DetectSwords DanceBrutal SwingRevenge
You Win
Machamp
Lv 36
Fighting
Guts
Scary FaceRevengeKnock OffStrength
Opal
Gym 5
Even

Duosion trades roughly evenly with Opal's team.

You Win
Weezing
Lv 36
Poison
Levitate
SludgeFairy WindTackle
Avoid
Mawile
Lv 36
SteelFairy
Intimidate
Draining KissCrunchIron DefenseAstonish
Even
Togekiss
Lv 37
FairyFlying
Hustle
Air SlashDraining KissAncient Power
Even
Alcremie
Lv 38
Fairy
Sweet Veil
Draining KissAcid ArmorSweet Kiss
Gordie
Gym 6
Even

Duosion trades roughly evenly with Gordie's team.

Even
Barbaracle
Lv 40
RockWater
Tough Claws
Shell SmashRock TombRazor Shell
You Win
Shuckle
Lv 40
BugRock
Contrary
Power SplitStone EdgeStruggle BugRock Tomb
Even
Stonjourner
Lv 41
Rock
Power Spot
Stealth RockRock TombBody SlamWonder Room
Even
Coalossal
Lv 42
RockFire
Steam Engine
Tar ShotStealth RockHeat CrashRock Tomb
Piers
Gym 7
Tough

Piers's team hits Reuniclus's weaknesses hard.

Risky
Scrafty
Lv 44
DarkFighting
Intimidate
Fake OutSand AttackBrick BreakPayback
Avoid
Malamar
Lv 45
DarkPsychic
Contrary
Night SlashFoul PlayPsycho CutPayback
Avoid
Skuntank
Lv 45
PoisonDark
Aftermath
Sucker PunchScreechToxicSnarl
Risky
Obstagoon
Lv 46
DarkNormal
Reckless
ObstructThroat ChopCounterShadow Claw
Raihan
Gym 8
Even

Reuniclus trades roughly evenly with Raihan's team.

You Win
Gigalith
Lv 46
Rock
Sand Stream
Stealth RockSand TombRock BlastBody Press
Even
Flygon
Lv 47
GroundDragon
Levitate
Thunder PunchBreaking SwipeCrunchSteel Wing
Even
Sandaconda
Lv 46
Ground
Sand Spit
ProtectGlareFire FangEarth Power
Risky
Duraludon
Lv 48
SteelDragon
Heavy Metal
Breaking SwipeBody PressStone EdgeIron Head
Bede
Gym 9
Tough

Bede's team hits Reuniclus's weaknesses hard.

Avoid
Mawile
Lv 51
SteelFairy
Intimidate
Play RoughIron HeadCrunch
Risky
Gardevoir
Lv 51
PsychicFairy
Synchronize
Dazzling GleamPsychicCalm MindWish
Even
Rapidash
Lv 52
Fire
Pastel Veil
Psycho CutTake DownDazzling GleamQuick Attack
Risky
Hatterene
Lv 53
PsychicFairy
Anticipation
PsychicDazzling GleamCalm MindMystical Fire
Leon
Champion
Even

Reuniclus trades roughly evenly with Leon's team.

Risky
Aegislash
Lv 62
SteelGhost
Stance Change
Kings ShieldShadow BallSacred SwordFlash Cannon
Even
Dragapult
Lv 62
DragonGhost
Clear Body
Shadow BallFlamethrowerThunderboltDragon Breath
Even
Haxorus
Lv 63
Dragon
Mold Breaker
Poison JabIron TailOutrageEarthquake
Risky
Mr Rime
Lv 64
IcePsychic
Tangled Feet
Teeter DancePsychicFreeze DryThunderbolt
Even
Inteleon
Lv 64
Water
Torrent
Snipe ShotDark PulseMud ShotTearful Look
Even
Charizard
Lv 65
FireFlying
Blaze
Fire BlastAir SlashSolar BeamAncient Power
Catch Solosis
Available after Badge 3
Type
Psychic
Tier
E

Catch Solosis on Giant's Cap (overworld, Lv 28-30). Heavy Fog.

View Solosis locations

Evolve Solosis to Duosion
Level 32
Type
Psychic
Tier
E

Your Solosis should hit Level 32 before you reach Bea, at typical leveling pace.

View Duosion locations

Evolve Duosion to Reuniclus
Level 41
Type
Psychic
Tier
B

Your Duosion should hit Level 41 before you reach Piers, at typical leveling pace.

View Reuniclus locations

How to Get Duosion in Sword & Shield

A few locations for Duosion with moderate rates across late-game routes. The sort toggle below swaps between best odds and earliest access, so you can approach it based on where you are in the game.

Shield Exclusive — Trade with Sword for Gothorita

Where To Catch Duosion in SwSh

To get Duosion, start by catching Solosis through walking encounters at Lv. 28-65. The chain covers 3 catchable stages before reaching the final form.

  1. Solosis
    Step 1Catch Solosis
    Giant's Cap - 2
    Lv.28-30Overworld
    ShieldRate 50%
    Heavy Fog
    Giant's Cap - 3
    Lv.28-32Overworld
    ShieldRate 50%
    Heavy Fog
    Giant's Cap
    Lv.28-30Overworld
    ShieldRate 40%
    Heavy Fog
    Frostpoint Field
    Lv.60-65Cave
    ShieldRate 20%
    Heavy Fog
    Slippery Slope
    Lv.60-65Grass
    ShieldRate 18%
    Heavy Fog
  2. Duosion
    Step 2Duosion
    Dusty Bowl
    Lv.42-47Overworld
    ShieldRate 10%
    Heavy Fog
    Frostpoint Field
    Lv.60-65Overworld
    ShieldRate 10%
    Heavy Fog
    Slippery Slope
    Lv.60-65Overworld
    ShieldRate 10%
    Heavy Fog
    or evolve from Solosis (Step 1)
  3. Reuniclus
    Step 3Catch or Evolve into Reuniclus
    Lake of Outrage
    Lv.55-58Overworld
    ShieldRate 13%
    Heavy Fog
    or evolve from Duosion (Step 2)

Duosion Weakness

Type-wise, Duosion takes extra damage from Bug, Ghost, and Dark. Not too many gaps in the chart, 3 weaknesses to account for.

Duosion Weakness and Resistance Chart
DamageTypes
2x (Weak)Bug, Ghost, Dark
0.5x (Resist)Fighting, Psychic

What is Duosion Weak Against

Vulnerable
3Weak
2Resist
0Immune
Score-4
4xCritical
None
¼xResist
None
0xImmune
None

What is Duosion Strong Against

2Strong
2Resisted
1Immune
Score-1
½xResisted
0xImmune

Best Pokemon Against Duosion

Duosion Evolutions

Duosion sits between Solosis and Reuniclus in this three-stage line. Not the final form yet. For breeding, average hatch time with a decent partner pool via one egg group. HP has grown the most so far (+20), but there's still another 120 stats to gain in the final evolution. View every chain in the Evolution Chart.

How to Evolve

3 Forms
Stat Comparison 3 Stages
Solosis
Psychic
Duosion
Psychic
Reuniclus
Psychic
HP
45
65+20
110+45
ATK
30
40+10
65+25
DEF
40
50+10
75+25
SP.ATK
105
125+20
125
SP.DEF
50
60+10
85+25
SPE
20
30+10
30
BST
290C-Tier
370C-Tier+80
490B-Tier+120
ROLE
Attacker
Cannon
Wallbreaker
TYPE
Special
Special
Special

Breeding

Very Easy

Breed with Duosion to get Solosis eggs easily using 46 partners from the Indeterminate egg group. Notable egg moves include Acid Armor, Astonish, Confuse Ray.

Egg Groups
Gender
50.0%50.0%
Hatch Time
20 cycles·5,140 steps
Quick~5 min with Flame Body
Egg Moves
3moves
Breed With (best first)
gardevoirgalladepolteageistalcremiegastrodonstunfisktrevenantpincurchinshellosphantumpsinisteacofagrigus

SwSh Duosion Best Moveset

125 Sp. Atk on a middle evolution is remarkable, and AbilityMagic Guard eliminates chip damage from every source. But 30 Speed goes last and 50/60 defenses can't absorb hits long enough. The moveset has raw power without durability. One evolution from Reuniclus.

Best Build

Experimental
Special Tank
Ability
Magic Guard
Item
EvioliteBULK
Best Nature for Duosion
Quiet+SPA

Duosion best EVs are HP and Sp. Atk

EVs

Special Tank Moveset

  • Calm MindSTAB
  • RecoverRecovery
  • Trick RoomSTAB
  • Stored PowerSTAB

Moves List

The egg pool carries weight here. Acid Armor and Astonish aren't available any other way for Duosion, and they meaningfully change what it threatens. Stack those on top of Future Sight and Psychic for solid options.

Level-Up Moves

Lv 1
Confusion
7510025Psychic
Lv 1
Endeavor
D1005Normal
Lv 1
Protect+4
C10Normal
Lv 1
Recover
S10Normal
Lv 12
Psybeam
B9710020Psychic
Lv 16
Charm
D10020Fairy
Lv 20
Psyshock
B12010010Psychic
Lv 24
Light Screen
C30Psychic
Lv 24
Reflect
C20Psychic
Lv 28
Ally Switch+2
15Psychic
Lv 35
Pain Split
C20Normal
Lv 40
Psychic
B13510010Psychic
Lv 46
Skill Swap
D10Psychic
Lv 52
Future Sight
B18010010Psychic
Lv 58
Wonder Room
10Psychic

TM Moves

TM
TR83
Ally Switch+2
15Psychic
TM31
Attract
C10015Normal
TR49
Calm Mind
S20Psychic
TM29
Charm
D10020Fairy
TR30
Encore
C1005Normal
TR26
Endure+4
C10Normal
TR65
Energy Ball
C9010010Grass
TM39
Facade
D7010020Normal
TR70
Flash Cannon
C8010010Steel
TR34
Future Sight
B18010010Psychic
TM61
Guard Swap
10Psychic
TR52
Gyro Ball
D1005Steel
TM41
Helping Hand+5
20Normal
TM44
Imprison
D10Psychic
TR46
Iron Defense
C15Steel
TM17
Light Screen
C30Psychic
TM60
Power Swap
10Psychic
TM25
Protect+4
C10Normal
TR11
Psychic
B13510010Psychic
TM91
Psychic Terrain
D10Psychic
TR25
Psyshock
B12010010Psychic
TM33
Rain Dance
C5Water
TM18
Reflect
C20Psychic
TM21
Rest
C10Psychic
TM22
Rock Slide
D759010Rock
TM48
Rock Tomb
D609515Rock
TM76
Round
C6010015Normal
TM19
Safeguard
D25Normal
TR33
Shadow Ball
C8010015Ghost
TR40
Skill Swap
D10Psychic
TR27
Sleep Talk
C10Normal
TM24
Snore
C5010015Normal
TR82
Stored Power
S3010010Psychic
TR20
Substitute
C10Normal
TR09
Thunder
C1107010Electric
TM14
Thunder Wave
C9020Electric
TR38
Trick
C10010Psychic
TM70
Trick Room-7
S5Psychic
TM71
Wonder Room
10Psychic
TR69
Zen Headbutt
D1209015Psychic

Egg Moves

Egg
Egg
Acid Armor
D20Poison
Egg
Astonish
D3010015Ghost
Egg
Confuse Ray
D10010Ghost

Tutor Moves

Tut
Tutor
Expanding Force
B12010010Psychic
Tutor
Steel Roller
D1301005Steel

Base Stats

Base Stats
Avg
HP65
C
Attack40
D
Defense50
D
Sp. Atk125
A
Sp. Def60
C
Speed30
F
Total370
Details
Catch Rate
Moderate100 / 255
Growth Rate
Medium Slow1.06M XP
Height0.6 m
Weight8.0 kg
Base XP130
Abilities
Overcoat
Protects against damage from weather.
Magic Guard
Protects against damage not directly caused by a move.
RegeneratorHidden Ability
Heals for 1/3 max HP upon switching out.
EV Yield
HPAtkDefSpA+2SpDSpe
Special Attack training target
Pokedex Entry

Its psychic power can supposedly cover a range of more than half a mile—but only if its two brains can agree with each other.

Its brain has split into two, and the two halves rarely think alike. Its actions are utterly unpredictable.

Duosion Sword & Shield Guide

  • At 370 BST, Duosion is firmly in pre-evolution territory. Evolve it into Reuniclus before bringing it to any serious fight.

  • In Sword & Shield, Duosion's biggest threats include Heracross (Bug), Chandelure (Ghost), and Tyranitar (Dark), all carrying super-effective STAB moves. At base 30 Speed, Duosion won't outrun any of these threats so switching to a resist is usually the safer play.

  • Duosion gets Magic Guard, Overcoat, and Regenerator. But Magic Guard is the one that matters. It's the centerpiece of every viable set. Build around that.

  • In Sword & Shield, Regenerator is the hidden ability. It heals for 1/3 max HP upon switching out. Worth hunting for if you want Duosion to compete at a higher level.

  • Duosion is a special attacker with base 125 Sp. Atk. Speed tells the real story. Base 30 Speed is low. Priority moves or Trick Room are the way to go. Fits the cannon role.

Game Availability

Since Black & White, Duosion has been obtainable in 8 games. A Generation 5 debut means a shorter history, but Duosion has appeared steadily across every generation since.

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