Gastly sits at the start of its evolution line — not yet at full power, but that changes fast. Most trainers push through to Gengar as fast as possible. Normal and Fighting moves can't touch it, which offsets the 4 weaknesses somewhat. Known as the Gas Pokemon.
Nothing fancy in Gastly's spread. It leans special with Sp. Atk out front. And you'll get 1 Sp. Atk EV per KO for it. Follows a 1.06M XP medium-slow curve.
It wraps its opponent in its gas-like body, slowly weakening its prey by poisoning it through the skin.
Gastly Weakness
GoodGastly is weak to Ground, Psychic, Ghost, and Dark-type moves. On the flip side, it's immune to Normal and Fighting-type moves entirely. Gastly leans toward special offense (base 100 Sp.Atk) instead of trying to wall anything.
- Dark and Steel types added — Fairy does not exist yet
- Moves are Physical or Special based on type, not per move
- Special stat split into Sp.Atk and Sp.Def
Gastly kicks off a three-stage evolution line through Haunter all the way to Gengar. For breeding, average hatch time with a small partner pool via one egg group. Evolving adds up to 190 stat points total.
How to Evolve
Breed Gastly easily with 11 breeding partners from the Indeterminate egg group. Pass egg moves like Haze, Perish Song, Psywave to offspring.
Best Build
Gen 2 build content has limited support (no abilities).
Try selecting a different game/generation filter, or check back later.
Egg moves make a real difference. Gastly gets Haze and Perish Song exclusively through breeding, filling gaps that TMs and level-up can't touch. Psychic and Normal coverage and more rounds out the picture alongside Shadow Ball and Lick.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
Gastly's scattered across 5 spots in early-game routes with high spawn rates. Check the list below for the closest location to wherever you are in the game. This one's quick.
Best Locations
You can find Gastly through 5 walking encounters at Lv. 3-22. The list is sorted by game progression, so the earliest accessible spots show up first.
At 310 BST, Gastly is firmly in pre-evolution territory. Evolve it into Haunter before bringing it to any serious fight.
Gastly evolves into Haunter at level 25. Gastly is the base form in a 3-stage evolutionary line.
Gastly is a special attacker with base 100 Sp. Atk. Fragile — can't afford to take many hits, too. But the speed tells the real story — base 80 Speed is workable — faster than some, slower than many. Fits the attacker role.
Gastly appears in 22 games, including Yellow, Red & Blue, and Gold & Silver.
Present since Red & Blue, Gastly appears in 22 games spanning 9 generations. Gen 1 originals like Gastly have the longest track record of availability in the series.
- Gen IY
Yellow - Gen IRBDebut
Red & Blue - Gen IIGS
Gold & Silver - Gen IIC
Crystal - Gen IIIRS
Ruby & Sapphire - Gen IIIFRLG
FireRed & LeafGreen - Gen IIIE
Emerald - Gen IVPt
Platinum - Gen IVHGSS
HeartGold & SoulSilver - Gen IVDP
Diamond & Pearl - Gen VBW
Black & White - Gen VB2W2
Black 2 & White 2 - Gen VIXY
X & Y - Gen VIORAS
Omega Ruby & Alpha Sapphire - Gen VIIUSUM
Ultra Sun & Ultra Moon - Gen VIISM
Sun & Moon - Gen VIILGPE
Let's Go Pikachu & Eevee - Gen VIIISwSh
Sword & Shield - Gen VIIIPLA
Legends: Arceus - Gen VIIIBDSP
Brilliant Diamond & Shining Pearl - Gen IXSV
Scarlet & Violet - Gen IXLZA
Legends: Z-A