Duosion locations — where to catch

In Blueberry Academy (Scarlet & Violet – The Indigo Disk)

• Polar Biome — Walk

Other games (5)

• Sword / Shield (Gen 8): Dusty Bowl, Stony Wilderness, Watchtower Ruins
• Sun / Moon (Gen 7): Alola Route 16
• X / Y (Gen 6): Friend Safari
• Black 2 / White 2 (Gen 5): Strange House, Unova Route 9
• Black / White (Gen 5): Unova Route 9

Duosion — full Pokédex entry