Stats & Training
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.
Since they have two divided brains, at times they suddenly try to take two different actions at once.
When their two divided brains think the same thoughts, their psychic power is maximized.
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 |
In Omega Ruby & Alpha Sapphire, Weavile can KO Duosion with Knock Off (193-227%). Gengar threatens a KO with Shadow Ball (219-258%). Volcarona's Flamethrower also KOs at 93-110%.
 Weavile DarkIce | A | |
Recommended Build AbilityPressure ItemChoice Band NatureJolly Moves
Damage vs Duosion View Weavile builds →Knock Off 2x193-227%KO Ice Shard59-70% Pursuit 2x119-141%KO | ||
 Gengar GhostPoison | B | |
Recommended Build AbilityLevitate ItemChoice Specs NatureTimid Moves
Damage vs Duosion View Gengar builds →Shadow Ball 2x219-258%KO Sludge Bomb123-145%KO Focus Blast55-64% | ||
 Volcarona BugFire | B | |
Recommended Build AbilityFlame Body ItemLum Berry NatureModest Moves
Damage vs Duosion View Volcarona builds →Giga Drain52-61% Flamethrower93-110%KO | ||
 Genesect BugSteel | B | |
Recommended Build AbilityDownload ItemChoice Scarf NatureHasty Moves
Damage vs Duosion View Genesect builds →U Turn 2x139-164%KO Flamethrower42-50% Ice Beam42-50% | ||
Omega Ruby & Alpha Sapphire Evolution
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
Breeding
Breed with Duosion to get Solosis eggs easily using 49 partners from the Indeterminate egg group. Notable egg moves include Acid Armor, Astonish, Confuse Ray and 5 more.
Omega Ruby & Alpha Sapphire Duosion Best Moveset
Best Build
No build content available for this Pokemon in Gen 6.
Try selecting a different game/generation filter, or check back later.
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 Dream Eater for solid options.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
Transfer Moves
How to Get Duosion in Omega Ruby & Alpha Sapphire
Duosion can't be caught in Omega Ruby & Alpha Sapphire. 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.
How to Obtain Duosion in Omega Ruby & Alpha Sapphire
Step 1Obtain SolosisCatch in the wild in:
Then trade to Omega Ruby & Alpha Sapphire to continue the evolution chain.
Also found in:
Step 2Duosion ✓
Duosion Guide
At 370 BST, Duosion is firmly in pre-evolution territory. Evolve it into Reuniclus before bringing it to any serious fight.
In Omega Ruby & Alpha Sapphire, 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 Omega Ruby & Alpha Sapphire, 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.
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 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