Where to find Gengar in Pokémon Mystery Dungeon Explorers of Darkness?

In Pokémon Mystery Dungeon: Explorers of Darkness, Gengar can be found in the "Mystery Dungeon" in the post-game. Specifically, he appears in the "Buried Relic" dungeon, which is accessible after completing the main storyline. Players can encounter Gengar in the various floors of this dungeon, where he may offer a challenge or assistance during your exploration. Be prepared for a tough battle, as Gengar is a powerful Pokémon!