Dusclops

Dusclops is a very rare Ghost-type Pokémon introduced in Generation III. It evolves from Duskull after being fed with 50 candies. Dusclops is also one of the first five Pokémon originally known from Hoenn region that were made available to catch in the game.

Pokédex description
Beckon Pokémon

''Dusclops's body is completely hollow—there is nothing at all inside. It is said that its body is like a black hole. This Pokémon will absorb anything into its body, but nothing will ever come back out.''

Possible attacks
Fast attacks Charged attacks

Evolution family
Dusclops is part of a two-member family.

Trivia

 * This Pokémon was first available during the Halloween 2017 event.
 * Since Generation IV of core series games, Dusclops evolves into Dusknoir, but in Pokémon GO it's currently not possible.