Fighting type and bug type are strong against dark type Pokémon.
Mito
Weak: Psychic Strong: Fighting
Sigilyph is weak against Rock, Ghost, Electric, Ice, and Dark type Pokemon.
Fighting type pokemon.
Flying, Poison, Bug, Fire, and Ice type moves are strong against a Grass type Pokemon.
Ice and Dragon type itself is strong against Dragon.
light type does not exist, but if such Type were real it's highly likely that Light would be strong against Dark and Ghost and weak against Dark.
Weak: Psychic Strong: Fighting
Psychic Pokemon are strong against fighting and posion types, but they are weak against dark type. The best basic psychic Pokemon is Alakazam
Sigilyph is weak against Rock, Ghost, Electric, Ice, and Dark type Pokemon.
No. Fire-Types are strong against Grass-Types, Bug-Types, Ice-Types, and Steel-Types. Dark-Types are weak against Bug-Types and Fighting-Types.
Dark, bug, and ghost.
A dark type is good against ghost and psychic types
The most effective type to use is Ghost, Bug, or Dark.
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.
Types that are strong against Dusclops (ghost) are: Dark Ghost
Dark, ghost and bug. But be careful, as Phycic Pokemon can hit ghost Pokemon hard as well. Dark types don't get affected by phycic attacks, but, although there are no dark-types around, use dark type moves like bite and crunch.
dark, for one, but psychic is super effective against dark to, try doing some research, it will be easy to find out.