Dusknoir

Dusknoir (Japanese: ヨノワール Yonowaaru) is a -type Pokémon introduced in Generation IV.

In the Anime
In Ghoul Daze!, it guards a tunnel that leads into the spirit world. Dusknoir prevents a rebel ghost child from taking humans into the spirit world, saving Ash and his friends.

In Working on a Right Move!, Conway used his Dusknoir against Ash in the Sinnoh League but lost.

Evolution
Dusknoir is the final evolution of Duskull. Dusknoir can be obtained by trading a Dusclops while it holds the item Reaper Cloth.

Pokémon Mystery Dungeon
In this game, Dusknoir plays a good guy in the beginning, when you first meet him. Everybody thinks he is a great and famous explorer. He saves you a few times too. But when you capture the "evil" Grovyle (who's really your partner when you were a human), Dusknoir grabs you and your partner and drags you into another world. You end up battling him and several Sableye before going to Temporal Tower.

In Explorers of Sky special, Dusknoir redeems himself by saving Grovyle twice and aided in the defeat of Primal Dialga in the future.

Name Origin
Dusknoir's name is composed of two words. The first is "dusk", which means afternoon, and "noir", which is French for black.

Trivia

 * Dusknoir might be inspired by Grim Reaper, followed by Dusclops and Duskull.
 * Despite its legend, Dusknoir is not a legendary Pokémon.
 * In the Japanese version, the Dusknoir Pokédex entry says it takes spirits to the Underworld. This could possibly be referring to Hell, a place in some religions in which the souls of sinners are taken in order to punish their sins. It was changed to the spirit world possibly because of the entry's morbidness and reference to religion.