---
title: "Duosion (#0578): Stats, Weaknesses, Moves & Lore | pokee.si"
url: "https://pokee.si/pokemon/duosion"
description: "Duosion (#0578): Psychic-type Mitosis Pokémon from Unova. Base stat total 370. Stats, matchups, evolutions, moves, every Pokédex entry and lore on pokee.si."
last_updated: "2026-10-21"
publisher: "pokee.si: a Pokédex for families (unofficial fan site)"
last_checked: "2026-10-20"
---

#0578 · Unova · Generation 5

# Duosion

Mitosis Pokémon · Psychic-type

![Duosion official artwork](https://pokee.si/img/art/578.webp)

Duosion is a [Psychic](https://pokee.si/types/psychic)-type Pokémon, the Mitosis Pokémon, number 578 (#0578) in the National Pokédex. It was introduced in Generation 5 and comes from the [Unova](https://pokee.si/guide/regions/unova) region. It is 0.6 m tall and weighs 8 kg.

Duosion is the Mitosis Pokémon, a Psychic type whose brain has split in two, so it often tries to do two different things at once. Its psychic power peaks only on the rare occasions when both halves agree.

## How to pronounce Duosion

Duosion is pronounced **doo-OH-zhun**. The capital letters show the stressed syllable.

Listen to Duosion said out loud:

[Listen](https://pokee.si/audio/names/578.mp3)

In Japanese it is ダブラン (Doublan).

Hear every other name on the [Pokémon pronunciation guide](https://pokee.si/pronounce).

## Lore

### Biology

Duosion is pale green, 0.6 m tall and 8 kg, with a big head, small stubby arms and a body that narrows to a point underneath. Its eyes are black ovals and its red mouth is shaped like a diamond. A darker green gel wraps its body and bulges into small round lumps along the lower sides and over its head, and a little round object floats inside it above the head.

### Behaviour

The Pokédex says its brain has split in two and the halves rarely think alike, so it is utterly unpredictable and may suddenly try two different actions at once. The Sword entry adds that its psychic power can supposedly reach beyond 0.8 km (half a mile), though only when both brains are in agreement.

### Habitat

The Pokédex gives no habitat. In Scarlet and Violet it is found in the Polar Biome of the Indigo Disk expansion's Terarium and in 3 star Tera Raid Battles.

### Powers

Duosion shares its line's Abilities: Overcoat and Magic Guard, with Regenerator hidden. It learns Ally Switch at level 28, Pain Split at 35 and Psychic at 40. With 125 base Special Attack and just 30 Speed, it suits a slow, hard-hitting Trick Room team.

### Name origin

Duosion may combine 'duo' (two) with 'fission', 'division' or 'fusion'. The Japanese name is Doublan (ダブラン), which may join 'double' with 卵 ran (egg cell).

### Design inspiration

Its category, Mitosis Pokémon, and the line down its head that looks like a cleavage furrow both point to a cell dividing in two. Bulbapedia also floats an embryo about to become a foetus, with the green gel as amniotic fluid. These are fan readings.

### Evolution notes

Duosion evolves from Solosis at level 32 and into Reuniclus at level 41.

### In the games

Duosion is a White version exclusive, found on Route 9, and it debuted there; Shield's Max Raid Battles also feature it. It is not available in Legends: Z-A.

### In the anime

Officer Jenny's Duosion helps hunt for a so-called Dream Thief in 'Beheeyem, Duosion, and the Dream Thief!', its first episode. Several Duosion had already appeared in the twin Victini films, under Damon.

### Fun facts

- Duosion's base stat total of 370 is 20 below Gothorita's 390, the one stage where the Solosis and Gothita lines do not match.
- In the Dream World it could be found at Spooky Manor, but only by players whose account was linked to Black 2 or White 2.
- The Chinese names count the cells: 单卵细胞球 for Solosis and 双卵细胞球 for Duosion, which Bulbapedia reads as 'single' and 'double' egg-cell ball.

Sources: [Bulbapedia: Duosion (Pokémon)](https://bulbapedia.bulbagarden.net/wiki/Duosion_(Pok%C3%A9mon)) · [Serebii: Duosion (Scarlet/Violet Pokédex)](https://www.serebii.net/pokedex-sv/duosion/)

## Base stats

- HP: **65**
- Attack: **40**
- Defense: **50**
- Sp. Atk: **125**
- Sp. Def: **60**
- Speed: **30**

Duosion’s base stat total is **370**. Its highest stat is Sp. Atk.

## Type matchups

### What is Duosion weak to?

Duosion takes extra damage from [Bug](https://pokee.si/types/bug) (2×), [Ghost](https://pokee.si/types/ghost) (2×), [Dark](https://pokee.si/types/dark) (2×) moves.

It resists [Fighting](https://pokee.si/types/fighting) (½×), [Psychic](https://pokee.si/types/psychic) (½×).

## Evolution

### What does Duosion evolve from?

Duosion evolves from [Solosis](https://pokee.si/pokemon/solosis) at level 32.

### How does Duosion evolve?

Duosion evolves into [Reuniclus](https://pokee.si/pokemon/reuniclus) at level 41.

The whole family: [Solosis](https://pokee.si/pokemon/solosis), **Duosion**, [Reuniclus](https://pokee.si/pokemon/reuniclus).

## Abilities

- [Overcoat](https://pokee.si/abilities/overcoat): Protects against damage from weather.
- [Magic Guard](https://pokee.si/abilities/magic-guard): Protects against damage not directly caused by a move.
- [Regenerator](https://pokee.si/abilities/regenerator) (hidden ability): Heals for 1/3 max HP upon switching out.

## Moves

### Moves Duosion learns by level up in Scarlet / Violet

| Level | Move | Type | Category | Power |
| --- | --- | --- | --- | --- |
| 1 | [Confusion](https://pokee.si/moves/confusion) | Psychic | Special | 50 |
| 1 | [Recover](https://pokee.si/moves/recover) | Normal | Status | — |
| 1 | [Protect](https://pokee.si/moves/protect) | Normal | Status | — |
| 1 | [Endeavor](https://pokee.si/moves/endeavor) | Normal | Physical | — |
| 12 | [Psybeam](https://pokee.si/moves/psybeam) | Psychic | Special | 65 |
| 16 | [Charm](https://pokee.si/moves/charm) | Fairy | Status | — |
| 20 | [Psyshock](https://pokee.si/moves/psyshock) | Psychic | Special | 80 |
| 24 | [Light Screen](https://pokee.si/moves/light-screen) | Psychic | Status | — |
| 24 | [Reflect](https://pokee.si/moves/reflect) | Psychic | Status | — |
| 28 | [Ally Switch](https://pokee.si/moves/ally-switch) | Psychic | Status | — |
| 35 | [Pain Split](https://pokee.si/moves/pain-split) | Normal | Status | — |
| 40 | [Psychic](https://pokee.si/moves/psychic) | Psychic | Special | 90 |
| 46 | [Skill Swap](https://pokee.si/moves/skill-swap) | Psychic | Status | — |
| 52 | [Future Sight](https://pokee.si/moves/future-sight) | Psychic | Special | 120 |
| 58 | [Wonder Room](https://pokee.si/moves/wonder-room) | Psychic | Status | — |

### TM moves (43)

Duosion can learn 43 moves from TMs in Scarlet / Violet: [Charm](https://pokee.si/moves/charm), [Protect](https://pokee.si/moves/protect), [Psybeam](https://pokee.si/moves/psybeam), [Confuse Ray](https://pokee.si/moves/confuse-ray), [Facade](https://pokee.si/moves/facade), [Swift](https://pokee.si/moves/swift), [Rock Tomb](https://pokee.si/moves/rock-tomb), [Stored Power](https://pokee.si/moves/stored-power), [Night Shade](https://pokee.si/moves/night-shade), [Endure](https://pokee.si/moves/endure), [Sunny Day](https://pokee.si/moves/sunny-day), [Rain Dance](https://pokee.si/moves/rain-dance), [Psyshock](https://pokee.si/moves/psyshock), [Zen Headbutt](https://pokee.si/moves/zen-headbutt), [Sleep Talk](https://pokee.si/moves/sleep-talk), [Reflect](https://pokee.si/moves/reflect), [Light Screen](https://pokee.si/moves/light-screen), [Thunder Wave](https://pokee.si/moves/thunder-wave), [Rest](https://pokee.si/moves/rest), [Rock Slide](https://pokee.si/moves/rock-slide), [Imprison](https://pokee.si/moves/imprison), [Flash Cannon](https://pokee.si/moves/flash-cannon), [Skill Swap](https://pokee.si/moves/skill-swap), [Substitute](https://pokee.si/moves/substitute), [Iron Defense](https://pokee.si/moves/iron-defense), [Trick](https://pokee.si/moves/trick), [Shadow Ball](https://pokee.si/moves/shadow-ball), [Energy Ball](https://pokee.si/moves/energy-ball), [Psychic](https://pokee.si/moves/psychic), [Encore](https://pokee.si/moves/encore), [Calm Mind](https://pokee.si/moves/calm-mind), [Helping Hand](https://pokee.si/moves/helping-hand), [Psychic Terrain](https://pokee.si/moves/psychic-terrain), [Trick Room](https://pokee.si/moves/trick-room), [Thunder](https://pokee.si/moves/thunder), [Tera Blast](https://pokee.si/moves/tera-blast), [Gravity](https://pokee.si/moves/gravity), [Gyro Ball](https://pokee.si/moves/gyro-ball), [Pain Split](https://pokee.si/moves/pain-split), [Psych Up](https://pokee.si/moves/psych-up), [Endeavor](https://pokee.si/moves/endeavor), [Future Sight](https://pokee.si/moves/future-sight), [Expanding Force](https://pokee.si/moves/expanding-force).

Egg moves (3):[Acid Armor](https://pokee.si/moves/acid-armor), [Astonish](https://pokee.si/moves/astonish), [Confuse Ray](https://pokee.si/moves/confuse-ray).

## Breeding & training

- Gender: 50% male, 50% female.
- Egg groups: Amorphous.
- Egg cycles: 20 (steps to hatch, Scarlet/Violet: 2,560).
- Catch rate: 100 out of 255.
- Base friendship (Gen 8 onward): 50.
- Growth rate: Medium Slow (1,059,860 experience points to reach level 100).
- Defeating it gives 2 Sp. Atk effort values.
- Base experience yield: 130.

## Pokédex entries

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

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. *(Sword)*

When their two divided brains think the same thoughts, their psychic power is maximized. *(Black 2, White 2, Y, Alpha Sapphire)*

Since they have two divided brains, at times they suddenly try to take two different actions at once. *(Black, X, Omega Ruby)*

When their brains, now divided in two, are thinking the same thoughts, these Pokémon exhibit their maximum power. *(White)*

## Names around the world

- **Japanese**: ダブラン
- **Romaji**: Doublan
- **French**: Méios
- **German**: Mitodos
- **Spanish**: Duosion
- **Italian**: Duosion
- **Korean**: 듀란
- **Chinese (Simplified)**: 双卵细胞球
- **Chinese (Traditional)**: 雙卵細胞球

## Trivia

- Taller than 25% of all Pokémon (0.6 m).
- Heavier than 23% of all Pokémon (8 kg).
- Base stat total 370, ranked #669 of 1,025.
- Its best stat is Sp. Atk, ranked #52 of 1,025.
- One of 102 Psychic-type Pokémon (counting dual types).
- One of 130 green Pokémon.
- Number 85 of 156 Pokémon introduced in Generation 5 (Unova).
- Part of an evolution family of 3 Pokémon.
- Can learn 49 different moves in Scarlet / Violet.
- Catch rate 100: about 13.1% per Poké Ball at full health.
- Appears in 5 distinct Pokédex entries.

## Sources and fact-checking

- Stats, types, abilities, moves, evolutions, forms and Pokédex entries: [PokéAPI](https://pokeapi.co) open game data.
- Lore: written by pokee.si in our own words, researched from [Bulbapedia: Duosion (Pokémon)](https://bulbapedia.bulbagarden.net/wiki/Duosion_(Pok%C3%A9mon)), [Serebii: Duosion (Scarlet/Violet Pokédex)](https://www.serebii.net/pokedex-sv/duosion/).
- Pronunciation (doo-OH-zhun): no English source says it out loud, so it is our best guess from the parts of the name.

**Last checked:** 20 October 2026. Every sentence of the lore was checked against Bulbapedia, Serebii and the game data.

## Explore

[Psychic-type Pokémon](https://pokee.si/types/psychic) · [Unova region guide](https://pokee.si/guide/regions/unova) · [Overcoat ability](https://pokee.si/abilities/overcoat) · [Magic Guard ability](https://pokee.si/abilities/magic-guard) · [Regenerator ability](https://pokee.si/abilities/regenerator) · [Compare Duosion](https://pokee.si/compare?ids=578) · [Full Pokédex](https://pokee.si/pokedex) · [Type chart](https://pokee.si/types) · [All moves](https://pokee.si/moves)

## Browse similar Pokémon

[Gen 5 Psychic-type Pokémon](https://pokee.si/types/psychic/gen-5) · [Gen 5 Pokémon list](https://pokee.si/pokedex/gen-5) · [Green Pokémon list](https://pokee.si/colours/green) · [Amorphous egg group](https://pokee.si/egg-groups/amorphous) · [Pokémon that start with D](https://pokee.si/pokemon-names/d)

← [Solosis](https://pokee.si/pokemon/solosis) | [Reuniclus](https://pokee.si/pokemon/reuniclus) →

---

Source: https://pokee.si/pokemon/duosion (HTML page). pokee.si is an unofficial fan site and is not affiliated with Nintendo, Creatures, GAME FREAK or The Pokémon Company. Pokémon and all related names and images are © their respective owners.