|Gengar - Shadow Pokémon|
|Sometimes, on a dark night, your shadow thrown by a streetlight will suddenly and startlingly overtake you. It is actually a Gengar running past you, pretending to be your shadow.|
Gengar is the part of a three-member family.
- Gengar was released with the game launch on July 6th, 2016.
- In the wild, maximum capture CP of Gengar is 2,245, however it can reach 2,432, if encountered Pokémon is boosted by current weather.
- Between October 26th and November 1st, 2016, Gengar's spawn rate and chance to be found in the wild were significantly higher during the Halloween event.
- Between October 20th and November 2nd, 2017, Gengar's spawn rate and chance to be found in the wild were significantly higher during the Halloween event.
- As a former 3rd tier Raid Boss, Gengar's CP was 19,768. Its maximum capture CP in Bonus Challenge was 1,496 and 1,870 when encountered Pokémon was boosted by weather.
- On August 20th, 2016, Gengar's attack Sludge Wave was replaced with Sludge Bomb, which has higher DPS.
- During the Halloween event in 2017, there were shiny forms of Gastly family members added to game data, although they weren't released to be caught in gameplay. 
- page, on the official Pokédex website
- Gengar article, on the Pokémon Wiki