Heres one for ya ghost types
Types that are strong against Dusclops (ghost) are: Dark Ghost
Fighting and bug type moves are super effective against the dark type.
any dark type move
I would choose a Dark or Ghost type
The three main Pokemon types that hold an advantage against psychic type Pokemon, are bug, ghost, and dark types. Ghost and Dark type Pokemon are usuallypreferredby trainers, usually due to their accuracy, and high critical moves, such as Night Slash. Odd enough, Dark type Pokemon are weak against bug types, while Ghosts are weak against Ghost and Dark types.
Pokémon types that can beat Psychic-type Pokémon are Dark, and Bug. Ghosts however lose against Psychic.
Ghost and dark type
Dark types beat ghost Pokemon, as do those of a higher level with the fire type.
Types that are strong against Dusclops (ghost) are: Dark Ghost
Fantina uses Ghost types. Ghost type moves are not very effective against Dark and Steel types. Dark and Ghost type moves are super-effective against Ghost types.
Dark type can beat ghost.
ghost
Psychic
Any Pokemon raised good enough can defeat an Umbreon (as with any other Pokemon), but Pokemon that have a type advantage against Dark types (those types being Fighting and Bug) have, well, a type advantage.
Fighting and bug type moves are super effective against the dark type.
Both Fighting types and Bug types are super effective against Dark types.
In Diamond and Pearl, Palmer has Milotic, Rhyperior, Dragonite, Regigigas, Heatran and Cresselia, for Milotic you can use an Electric-type such as Pikachu, Electabuzz, Jolteon, Zapdos, Raikou and Ampharos can beat it, Grass-types such as Bulbasaur, Leafeon, Chikorita, Meganium and Skiploom and Water-types such as Squirtle and Totodile can beat Rhyperior, Ice-types and Dragon-types can beat Dragonite, Fighting-type Pokemon can beat Regigigas, Fighting, Ground and Water-types can bet Heatran and you can use Dark, Ghost and Bug-type Pokemon to beat Cresselia.