grass
electric
Grass type Pokemon are strong against Water, Ground and Rock.
Bug-type Pokemon are strong against Grass, Fighting, and Ground-type moves.
almost everything
Dragon, ground, or ice
Psychic Pokemon are strong against fighting and posion types, but they are weak against dark type. The best basic psychic Pokemon is Alakazam
Try Oghburg, Eterna Forest and The Great Marsh at Pastoria.
Any Pokemon strong to water: Electric types and grass types work the best.
The pokemon that are strong against psychic are bug, dark, and ghost.
Grass type Pokemon are strong against Water, Ground and Rock.
Bug-type Pokemon are strong against Grass, Fighting, and Ground-type moves.
Fighting types are weak against psychic and flying types.
Fighting type and bug type are strong against dark type Pokémon.
Flying, Poison, Bug, Fire, and Ice type moves are strong against a Grass type Pokemon.
Fighting type pokemon.
ice and dragon
Ground is super-effective against electricGround type pokemon.
yes u can win against the pastoria gym leader ur Pokemon just need to be strong so use ur vs.seeker to verse trainers and battle in the grass a lot and when ur Pokemon r really strong go back to the pastria gym and battle him and u might (probbly) win! that's wat i did coz after the 8th gym u go to the Pokemon lauge and verse eliote 4 and all of the other ppl before him and the u verse the girl who gives u the secert potion to give to the psyducks (just to let u no shes REALLY hard)