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 Moves
Damage vs Duosion View Dragapult builds →U Turn 2x28-34% Draco Meteor71-84% Shadow Ball 2x88-104%KO | ||
 Genesect BugSteel | B | |
Recommended Build Moves
Damage vs Duosion View Genesect builds →U Turn 2x63-75% Extreme Speed24-28% | ||
 Hydreigon DarkDragon | B | |
Recommended Build 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 Amorphous egg group.
Shiny Duosion
Orange-red nucleus floating in that green jelly. Duosion's shiny keeps the momentum from Solosis going with the added visual complexity of the split cell. A tier.
Shiny Duosion Odds & Hunting Methods
8 of 8 VerifiedHow do we research these odds?
We check every game where a shiny is possible, then rank each one by the best method available in that game, so the row at the top is the fastest route overall.
Odds marked verified are cross-checked against multiple independent sources before we publish them. Where a rate is not yet confirmed we mark the row pending rather than guess a number.
Read our full methodologyHow to Get Duosion
Duosion starts showing up in endgame routes across 2 encounter spots. The list below lets you 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)
Bring the right balls: check Duosion catch odds in the Scarlet & Violet Catch Rate Calculator before you throw.
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 FogFrostpoint FieldLv.65OverworldShieldHeavy FogSlippery SlopeLv.65OverworldShieldHeavy Fogor evolve from Duosion (Step 2)
Bring the right balls: check Duosion catch odds in the Sword & Shield Catch Rate Calculator before you throw.
Duosion can't be caught in Ultra Sun & Ultra Moon. Transfer Solosis in from Black & White, Black 2 & White 2, or X & Y, then evolve it into Duosion. The step cards below show each evolution.
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 Dark grass · Route 16. 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
Set aside a Tuesday and scan Route 16, because that is the lone chance to draw out Duosion, an Island Scan encounter that shows up at level 33 and nowhere else.
Where To Catch Duosion in SM
- Step 1Obtain SolosisBREEDINGAvailableLeave Duosion with a compatible partner at the Pokemon Day Care to receive a Solosis egg.
- Step 3Evolve into Reuniclus
Bring the right balls: check Duosion catch odds in the Sun & Moon Catch Rate Calculator before you throw.
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
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.
For a casual playthrough, Duosion works as a placeholder. Psychic coverage is useful early. The real payoff is Reuniclus. That's where the stats start mattering.
Duosion plays as a cannon. It's slow, so Trick Room or priority moves are key. so pick your spots carefully.
Modest is the go-to nature for Duosion. That's +Sp. Atk / -Attack. Pair it with 252 HP / 176 Def / 80 SpD EVs. Fits the cannon role.
Duosion pairs best with Regice, Ninetales Alola, and Sandslash Alola. Regice has Good synergy and covers what Duosion can't handle on its own.
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 7Let's Go
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
Explore
Where to go next after Duosion.
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