Ghost

Attack
Ghost-type moves are super effective against Psychic and Ghost-type.

Ghost-type moves are not very effective against Dark-type.

Ghost-type moves are completely ineffective against Normal-type.

Defense
Dark and Ghost-type are super effective against Ghost-type.

All Ghost-Type Pokemon
094 Gengar

302 Sableye

487 Giratina

354 Banette

093 Haunter

479 Rotom

478 Froslass

720 Hoopa

092 Gastly

353 Shuppet

200 Misdreavus

292 Shedinja

429 Mismagius

355 Duskull

477 Dusknoir

356 Dusclops

442 Spiritomb

425 Drifloon

426 Drifblim

681 Aegislash

609 Chandelure

607 Litwick

623 Golurk

679 Honedge

593 Jellicent

710 Pumpkaboo

592 Frillish

708 Phantump

562 Yamask

563 Cofagrigus

622 Golett

709 Trevenant

680 Doublade

608 Lampent

711 Gourgeist