Gastly evolves at level 25.
HootHoot, Stantler, Gastly, Drowzee and Poliwag
yes
train it
VulpixGrowlitheEevee
magikarp will evolve at lvl 20 to a gyarados
Gastly evolves into Haunter at Lv25.
Level 26
in the lv 26
In Pokémon SoulSilver, Gastly will evolve once it hits Level 25.
gastly
You don't need to get a gastly to evolve because you can catch haunters in Pokemon tower
2 haunters a gastly and a gengar
HootHoot, Stantler, Gastly, Drowzee and Poliwag
Actually....Shuckle doesn't evolve at all
wha?
yes
Levels Pokemon evolve range from 7-55.