Metang locations — where to catch

In Lumiose City (Legends: Z-A)

• Lysandre Labs — Walk

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

• Canyon Biome — Walk
• Chargestone Cavern — Walk
• Polar Biome — Walk, Static Encounter

In Johto & Kanto (HeartGold & SoulSilver)

• Johto Safari Zone — Walk

Other games (5)

• Sword / Shield — The Isle of Armor (Gen 8): Frigid Sea, Giant's Bed, Max Lair, Path to the Peak, Snowslide Slope
• Sun / Moon (Gen 7): Poké Pelago, Poke Pelago
• X / Y (Gen 6): Friend Safari
• Black 2 / White 2 (Gen 5): Giant Chasm, Hidden Grotto
• Black / White (Gen 5): Giant Chasm

Metang — full Pokédex entry