The Gas type is a fanon type introduced in Pokémon Mighty & Nasty versions, started as a DLC and in-game available in later games. Gas type is actually based on gaseous molecules such as Gas itself, smoke, mist and anything that had no hard forms nor surfaces aside of dusts, flames, water, light and darkness. Gas type is used to balance Fire in term of offensive and defensive type effectiveness.

In offensive terms, Gas is strong against Fire, Water, Electric, as well as another fanon-type, Jungle. However, it is resisted by Light, Dark, Ghost and Poison. Defensively, it can resists Fire, Electric, Bug, Fighting and Psychic but is vulnerable to Dark, Light, Poison and either Robot or Cyber, whether of the two is available. The biggest threats are Dark and Light, while Poison is usable.

Gas is well balanced, and shares slowness and health with Water, but is more defensively built, while still good to hit hard.

While the total numbers of Gas-Type Pokémon is still pending, multiple official Pokémon like Weezing gained such Type. Pure Gas Pokémon is actually rare, as many Gas Pokémon are dual-typed.

Gas Pokémon have mixed amount of Egg Groups, and are based on creatures that is related to gaseous particles like smoke, and behavior is depended on the used particles; Pokémon with gas tend to be familiar with Poison, while Pokémon based on mist or vapor have familiar characteristics of Water, but some have more unique behaviors than others.

In Shadow Inferno's depiction of the Gas-Type, the type has actually been split into two sub-types which share many similarities with the parent type, these types are the Mist Type and Fume Type and effectively make up the two halves of the Gas-Type's primary demographics and share much of the same weaknesses and strengths as their parent type.

Type matchups

Mighty & Nasty versions

Offensive
Gas
Defensive
Power Types   Power Types
Electric
Fire
Water
½×
Bug
Electric
Fire
Fighting
Psychic
½×
Dark
Ghost
Light
Poison
Dark
Light
Poison
None None


Mist & Fume Types

Offensive
Mist
Defensive
Power Types   Power Types
Rock
Fire
Ground
½×
Rock
Psychic
Fire
Flying
½×
Ghost
Steel
Dark
Electric
Poison
Dark
None None


Offensive
Fume
Defensive
Power Types   Power Types
Water
Electric
Fire
Steel
½×
Fire
Bug
Fighting
½×
Rock
Poison
Ground
Ghost
Rock
Poison
Flying
None
Electric


Pokémon

Note: All Pokemon below are considered Gas-Type in place of Mist or Fume-Type.

# Pokémon Type
109 px Fume Fume


110 px Fume Fume


351 px Mist Mist


174 px Fume Fairy


039 px Fume Fairy


040 px Fume Fairy


110G px Fume Fairy


316 px Fume Poison


317 px Fume Poison


351S px Mist Fire


351R px Mist Water


351H px Mist Ice


434 px Mist Dark


435 px Mist Dark


088 px Poison Mist


089 px Poison Mist


092 px Ghost Mist


093 px Ghost Mist


094 px Ghost Mist


240 px Fire Fume


126 px Fire Fume


467 px Fire Fume


269 px Bug Mist


320 px Water Mist


321 px Water Mist


425 px Ghost Fume


426 px Ghost Fume


517 px Psychic Mist


518 px Psychic Mist


631 px Fire Mist


682 px Fairy Mist


683 px Fairy Mist


789 px Psychic Fume


790 px Psychic Fume


Please note that these only apply to certain Pokémon games.

Specialists

Notable



Pokémon Types
Official Types
Normal
Fighting
Flying
Poison
Ground
Rock
Bug
Ghost
Steel
Fire
Water
Grass
Electric
Psychic
Ice
Dragon
Dark
Fairy
???
Fanon Types
Arcane
Blast
Clean
Cosmic
Cyber
Demon
Dream
Gas
Gravity
Holy
Hunter
Light
Love
Lunar
Magic
Marine
Monster
Neon
Plasma
Quartz
Robot
Shade
Shadow
Solar
Sound
Star
Wind
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