Ghastly to Haunter is 25. Haunter to Gengar you'll have to trade it with a friend.
just when gastly evolves into haunter it dosent matter what level you trade it it will evolve
In Pokémon Platinum, you can catch Haunter by evolving a Gastly or by finding one in the wild. Gastly can be found in the Old Chateau, specifically in the room with the TV on the second floor. After capturing a Gastly, you can evolve it into Haunter at level 25. Alternatively, you can trade for a Haunter from another player, as it evolves from Gastly through leveling up.
It evolves at lv.15 and can then learn shadow punch.
lv. 30 platinum
Arbok does not evolve
Gastly evolves at level 20 into Haunter
Gastly evolves at level 22 then Haunter evolves by trading it.
Gastly evolves into Haunter once it reaches level 25 or higher.
Gastly evolves once it reaches level 18. It evolves into a Haunter. To evolve Haunter into a Gengar, you must trade it to another player.
gastly evolve on level 25
just when gastly evolves into haunter it dosent matter what level you trade it it will evolve
Gastly evolves at level 25.
To evolve Gastly into Haunter just get it up to level 25.
Gastly evolves into Haunter at level 25, then trade it and it will evolve again into Gengar.
Gaspar is not a Pokemon well anyway it's gastly he evolves around level 18 and 20
Level 25
Gastly evolves at LV. 25