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 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.
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 |
Volcarona's Heat Wave hits Duosion for 67-79%. Kingambit's Sucker Punch also KOs at 135-159%.
 Volcarona BugFire | A | |
Recommended Build AbilityFlame Body ItemGrassyseed NatureModest Moves
Damage vs Duosion View Volcarona builds →Heat Wave67-79% | ||
 Annihilape FightingGhost | A | |
Recommended Build AbilityDefiant ItemSitrus Berry NatureJolly Moves
Damage vs Duosion View Annihilape builds →Drain Punch25-30% | ||
 Kingambit DarkSteel | A | |
Recommended Build AbilitySupremeoverlord ItemLeftovers NatureAdamant Moves
Damage vs Duosion View Kingambit builds →Sucker Punch 2x135-159%KO | ||
 Dragapult DragonGhost | A | |
Recommended Build AbilityInfiltrator ItemChoice Specs NatureTimid Moves
Damage vs Duosion View Dragapult builds →U Turn 2x55-65% Draco Meteor119-140%KO Shadow Ball 2x147-173%KO | ||
 Genesect BugSteel | B | |
Recommended Build AbilityDownload ItemChoice Scarf NatureAdamant Moves
Damage vs Duosion View Genesect builds →U Turn 2x124-146%KO Extreme Speed47-55% | ||
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.
The Sash lets Duosion ignore defensive shortcomings for one turn. Use that turn to deal early damage, and Magic Guard squeezes extra value from the position. Max HP and Sp. Atk EVs push damage output.
Best Build
Duosion best EVs are HP and Sp. Atk
Special Tank Moveset
- Shadow Ball
- Psychic
- Trick Room
- Endeavor
Recommended Teammates
Wall Moveset
- Pain Split
- Reflect
- Light Screen
- Thunder Wave
Recommended Teammates
Doubles Special Attacker Moveset
- Trick Room
- Expanding Force
- Shadow Ball
- Tera Blast
Recommended Teammates
Doubles Wall Moveset
- Psychic
- Trick Room
- Recover
- Protect
Recommended Teammates
Special Tank Moveset
- Calm Mind
- Recover
- Trick Room
- Stored Power
Recommended Teammates
No build content available for this Pokemon in Gen 7.
Try selecting a different game/generation filter, or check back later.
No build content available for this Pokemon in Gen 7.
Try selecting a different game/generation filter, or check back later.
Moves
Most of Duosion's flexibility comes from TMs. Same-type output runs through Future Sight and Psychic, but Normal and Grass and the rest of the TM pool push it from predictable to genuinely threatening.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
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.
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 Dream Eater for solid options.
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 Dream Eater for solid options.
No wild encounters for Duosion in Scarlet & Violet. Bring Solosis over from White, White 2, or Shield, then level through the stages. Each step in the chain is laid out below.
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 Sword & Shield
To get Duosion, start by catching Solosis through walking encounters at Lv. 28-65. The chain covers 2 catchable stages before reaching the final form.
Step 1Catch SolosisGiant's Cap - 2Overworld Lv.28-3050%MidHeavy FogGiant's Cap - 3Overworld Lv.28-3250%MidHeavy FogGiant's CapOverworld Lv.28-3040%MidHeavy FogFrostpoint FieldGrass Lv.60-65 Ice20%PostHeavy FogSlippery SlopeGrass Lv.60-6518%PostHeavy Fog
Step 2Duosion ✓Dusty BowlOverworld Lv.42-4710%LateHeavy FogFrostpoint FieldOverworld Lv.60-65 Ice10%PostHeavy FogSlippery SlopeOverworld Lv.60-6510%PostHeavy Fogor evolve from Solosis (Step 1)
Duosion can't be caught in Ultra Sun & Ultra Moon. Transfer Solosis from White, White 2, or Shield and evolve through the 2-stage line to get it. The step cards below map the full chain.
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.
Where To Catch Duosion in Sun & Moon
Step 1Obtain Solosis
Step 2Duosion ✓Route 16SunGrass Lv.33 RouteLateIsland Scan (Tuesday)Route 16MoonGrass Lv.33 RouteLateIsland Scan (Tuesday)or evolve from Solosis (Step 1)
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.
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 1Y
Yellow - Gen 1RB
Red & Blue - Gen 2GS
Gold & Silver - Gen 2C
Crystal - Gen 3RS
Ruby & Sapphire - Gen 3FRLG
FireRed & LeafGreen - Gen 3E
Emerald - Gen 4Pt
Platinum - Gen 4HGSS
HeartGold & SoulSilver - Gen 4DP
Diamond & Pearl - Gen 5BWDebut
Black & White - Gen 5B2W2
Black 2 & White 2 - Gen 6XY
X & Y - Gen 6ORAS
Omega Ruby & Alpha Sapphire - Gen 7USUM
Ultra Sun & Ultra Moon - Gen 7SM
Sun & Moon - Gen 7LGPE
Let's Go Pikachu & Eevee - Gen 8SwSh
Sword & Shield - Gen 8PLA
Legends: Arceus - Gen 8BDSP
Brilliant Diamond & Shining Pearl - Gen 9SV
Scarlet & Violet - Gen 9LZA
Legends: Z-A - Gen 10WW
Winds & Waves