New Info - Mega Gengar and Costume Gengar added : r/TheSilphRoad

New Info - Asset Update - Spooky Clothes and Poses have been pushed : r/ TheSilphRoad

MEGA GENGAR RAID in Pokemon Go - Halloween 2020 Costume Gengar

Gengar is wearing what? : r/pokemongo

Wild Shiny Spooky Festival Costume Gengar After 23 Tries

Best Mega Gengar Posts - Reddit

Most Useful Pokémon in Pokémon GO - 10/29/23 Update : r/TheSilphRoad

In love with shiny Mega Gengar! : r/pokemongobrag

Shiny mega Gengar, what a beast! : r/pokemongobrag

100%, shiny, double moved, legacy, best buddy Gengar : r/pokemongobrag

Visual bug] Pokedex-Gastly line shows costume gengar if navigated through Gengar or Mega Gengar, but shows regular sprite if navigated through Gastly or Haunter : r/TheSilphRoad

New Costumes revealed through ad. : r/TheSilphRoad

Gengar, Pokémon GO Wiki