Where to catch Masquerain

In Paldea (Scarlet & Violet)

• Area Zero — Walk
• South Province (Area Five) — Walk
• South Province (Area One) — Walk

In Kitakami (Scarlet & Violet – The Teal Mask)

• Kitakami Wilds — Walk
• Mossfell Confluence — Walk

Masquerain — full Pokédex entry