Duosion Best Moveset
125 Sp. Atk at 30 Speed on Psychic with AbilityMagic Guard blocking indirect damage. Held ItemEviolite adds bulk since Reuniclus exists. The Sp. Atk is already at Reuniclus levels. The moveset fires special Psychic TermStab behind Eviolite walls. One evolution from the 110 HP and Magic Guard+Life Orb combo that defines Reuniclus.
Duosion saw minimal competitive use in Gen V (Black & White / B2W2). This was Duosion's competitive peak. Its most popular set ran Magic Guard with Eviolite, favoring a Bold nature.
Best Moves
Best Build
Duosion best EVs are HP and Defense
Wall Moveset
- Recover
- Calm Mind
- Psychic
- Psyshock
Recommended Teammates
Duosion saw minimal competitive use in Gen VI (X & Y / ORAS). Duosion maintained its position from the previous generation. Its most popular set ran Magic Guard with Eviolite, favoring a Bold nature.
Wall Moveset
- Calm Mind
- Recover
- Acid Armor
- Psyshock
Recommended Teammates
Duosion saw minimal competitive use in Gen VII (Sun & Moon / USUM). Duosion maintained its position from the previous generation. Its most popular set ran Magic Guard with Eviolite, favoring a Quiet nature.
Special Tank Moveset
- Psychic
- Calm Mind
- Recover
- Trick Room
Duosion saw minimal competitive use in Gen VIII (Sword & Shield / BDSP). Duosion maintained its position from the previous generation. Its most popular set ran Magic Guard with Eviolite, favoring a Quiet nature.
Special Tank Moveset
- Calm Mind
- Recover
- Trick Room
- Stored Power
Recommended Teammates
Duosion saw minimal competitive use in Gen IX (Scarlet & Violet / Legends Z-A). Duosion maintained its position from the previous generation. Its most popular set ran Magic Guard with Eviolite, favoring a Modest nature.
Wall Moveset
- Calm Mind
- Recover
- Future Sight
- Iron Defense
Recommended Teammates
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.
| Damage | Types |
|---|---|
| 2x (Weak) | Bug, Ghost, Dark |
| 0.5x (Resist) | Fighting, Psychic |
What is Duosion Weak Against
VulnerableBest Pokemon Against Duosion
Dragapult can KO Duosion with Shadow Ball (88-104%). Genesect's U-turn hits Duosion for 63-75%. Hydreigon deals 69-81% with Dark Pulse.
 Dragapult DragonGhost | S | |
Recommended Build AbilityInfiltrator ItemChoice Specs NatureTimid Moves
Damage vs Duosion View Dragapult builds →U Turn 2x28-34% Draco Meteor71-84% Shadow Ball 2x88-104%KO | ||
 Genesect BugSteel | B | |
Recommended Build AbilityDownload ItemChoice Scarf NatureAdamant Moves
Damage vs Duosion View Genesect builds →U Turn 2x63-75% Extreme Speed24-28% | ||
 Hydreigon DarkDragon | B | |
Recommended Build AbilityLevitate ItemLeftovers NatureTimid Moves
Damage vs Duosion View Hydreigon builds →Dark Pulse 2x69-81% Draco Meteor56-66% Flash Cannon23-27% | ||
Evolution
Duosion sits between Solosis and Reuniclus in this three-stage line. Not the final form yet. For breeding, average hatch time with plenty of partners 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
Breeding
Breed with Duosion to get Solosis eggs easily using 63 partners from the Indeterminate egg group.
How to Get Duosion
Duosion starts showing up in endgame routes at moderate rates across 4 encounter spots. The list below is sorted so you can pick what fits your current progress without scrolling through everything.
Where To Catch Duosion in SV
Solosis is your first catch on the way to Duosion. You'll find walking encounters from Lv. 50-80 across 10 total spots in the chain.
Step 1Catch SolosisPolar BiomeLv.50-80OverworldPolar BiomeLv.63Overworld
Step 2Duosion ✓Polar BiomeLv.50-80OverworldPolar BiomeLv.67Overworldor evolve from Solosis (Step 1)
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.
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.
Step 1Catch SolosisGiant's Cap - 2Lv.28-30OverworldShieldRate 50%Heavy FogGiant's Cap - 3Lv.28-32OverworldShieldRate 50%Heavy FogGiant's CapLv.28-30OverworldShieldRate 40%Heavy FogFrostpoint FieldLv.60-65CaveShieldRate 20%Heavy FogSlippery SlopeLv.60-65GrassShieldRate 18%Heavy Fog
Step 2Duosion ✓Dusty BowlLv.42-47OverworldShieldRate 10%Heavy FogFrostpoint FieldLv.60-65OverworldShieldRate 10%Heavy FogSlippery SlopeLv.60-65OverworldShieldRate 10%Heavy Fogor evolve from Solosis (Step 1)
Step 3Catch or Evolve into ReuniclusLake of OutrageLv.55-58OverworldShieldRate 13%Heavy Fogor evolve from Duosion (Step 2)
Duosion can't be caught in Ultra Sun & Ultra Moon. Transfer Solosis from Black & White, Black 2 & White 2, or Scarlet & Violet and evolve through the 3-stage chain to get it. The step cards below map the full chain.
How to Obtain Duosion in USUM
Step 1Obtain SolosisLATER APPEARANCEfrom Black & WhiteNot TradeableAppears in Black & White via Walking · Route 16. Forward-only transfer — no path back to this game from a later one.LATER APPEARANCEfrom Black 2 & White 2Not TradeableAppears in Black 2 & White 2 via Walking · Route 5. Forward-only transfer — no path back to this game from a later one.LATER APPEARANCEfrom X & YNot TradeableAppears in X & Y via Walking · Reflection Cave. Forward-only transfer — no path back to this game from a later one.LATER APPEARANCEfrom Sword & ShieldNot TradeableAppears in Sword & Shield via Overworld · Giant's Cap · Heavy Fog. Forward-only transfer — no path back to this game from a later one.LATER APPEARANCEfrom Scarlet & VioletNot TradeableAppears in Scarlet & Violet via Overworld · Polar Biome. Forward-only transfer — no path back to this game from a later one.- Step 2Duosion ✓
Step 3Evolve into Reuniclus
Duosion starts showing up in late-game routes at moderate rates across 2 encounter spots. The list below is sorted so you can pick what fits your current progress without scrolling through everything.
Base Stats
The stat bars tell the story: Sp. Atk carries everything and Speed's dead weight. But this Mitosis Pokemon still yields 2 Sp. Atk EVs per fight on a 1.06M XP medium-slow curve.
Its brain has split into two, and the two halves rarely think alike. Its actions are utterly unpredictable.
Duosion Guide
At 370 BST, Duosion is firmly in pre-evolution territory. Evolve it into Reuniclus before bringing it to any serious fight.
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.
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.
Click a game to view version-specific details
- Gen 1RB
Red & Blue - Gen 1Y
Yellow - Gen 2GS
Gold & Silver - Gen 2C
Crystal - Gen 3RS
Ruby & Sapphire - Gen 3E
Emerald - Gen 3FRLG
FireRed & LeafGreen - Gen 4DP
Diamond & Pearl - Gen 4Pt
Platinum - Gen 4HGSS
HeartGold & SoulSilver - Gen 5BWDebut
Black & White - Gen 5B2W2
Black 2 & White 2 - Gen 6XY
X & Y - Gen 6ORAS
Omega Ruby & Alpha Sapphire - Gen 7SM
Sun & Moon - Gen 7USUM
Ultra Sun & Ultra Moon - Gen 7LGPE
Let's Go Pikachu & Eevee - Gen 8SwSh
Sword & Shield - Gen 8BDSP
Brilliant Diamond & Shining Pearl - Gen 8PLA
Legends: Arceus - Gen 9SV
Scarlet & Violet - Gen 9LZA
Legends: Z-A - Gen 10WW
Winds & Waves