Where to catch Mightyena

In Kitakami (Scarlet & Violet – The Teal Mask)

• Kitakami Wilds — Walk
• Oni Mountain — Walk
• Paradise Barrens — Walk
• Timeless Woods — Walk
• Wistful Fields — Walk

In Hoenn (Ruby, Sapphire & Emerald)

• Route 120 — Walk
• Route 121 — Walk
• Route 123 — Walk

Mightyena — full Pokédex entry