Lopunny locations — where to catch

In Lumiose City (Legends: Z-A)

• Wild Zone 18 — Walk, Static Encounter

In Hisui (Legends: Arceus)

• Bonechill Wastes — Walk
• Snowfall Hot Spring — Walk
• Space-time distortions — Walk
• The Heartwood — Walk

Other games (3)

• Sword / Shield — The Isle of Armor (Gen 8): Fields of Honor, Max Lair, Soothing Wetlands
• Ultra Sun / Ultra Moon (Gen 7): Poni Grove
• Black 2 / White 2 (Gen 5): Castelia City

Lopunny — full Pokédex entry