Dark type
Dark-type Pokémon are weak to Fighting, Bug, and Fairy moves. They resist Ghost and Dark. Psychic moves have no effect on them. Dark moves are super effective against Psychic and Ghost.

Dark weaknesses
Moves used against a Dark-type Pokémon
Dark moves
Dark moves against each type
Every Dark-type Pokémon
Alolan Rattata
Alolan Raticate
Alolan Meowth
Alolan Persian
Alolan Grimer
Alolan Muk
Mega Gyarados
Galarian Moltres
Umbreon
Murkrow
Hisuian Qwilfish
Sneasel
Houndour
Houndoom
Mega Houndoom
Tyranitar
Mega Tyranitar
Poochyena
Mightyena
Galarian Zigzagoon
Galarian Linoone
Nuzleaf
Shiftry
Sableye
Mega Sableye
Carvanha
Sharpedo
Mega Sharpedo
Cacturne
Crawdaunt
Absol
Mega Absol
Mega Absol Z
Honchkrow
Stunky
Skuntank
Spiritomb
Drapion
Weavile
Darkrai
Mega Darkrai
Hisuian Samurott
Purrloin
Liepard
Sandile
Krokorok
Krookodile
Scraggy
Scrafty
Mega Scrafty
Zorua
Zoroark
Pawniard
Bisharp
Vullaby
Mandibuzz
Deino
Zweilous
Hydreigon
Greninja
Mega Greninja
Ash-Greninja
Pangoro
Inkay
Malamar
Mega Malamar
Yveltal
Hoopa Unbound
Incineroar
Guzzlord
Nickit
Thievul
Impidimp
Morgrem
Grimmsnarl
Obstagoon
Morpeko
Urshifu
Zarude
Overqwil
Meowscarada
Lokix
Maschiff
Mabosstiff
Bombirdier
Kingambit
Brute Bonnet
Iron Jugulis
Wo-Chien
Chien-Pao
Ting-Lu
Chi-Yu
Roaring Moon