Route 21 (Shadow Realm) — Yu-Gi-Oh POKeDUEL
Every wild Pokémon here, by encounter method.
Route 21 (Shadow Realm) lists 9 Pokémon across 1 encounter method (grass), between level 30 and 50. 6 of them are on no other route's wild tables in this guide: Great Mammoth of Goldfine, Cybernetic Cyclopean, Dark Ruler Ha Des, Dark King of the Abyss, Change of Heart, Divine Geh.
