Corptain

is a Rank S Drain-attribute Rare Yo-kai of the Brave tribe.

Yo-kai Watch
After upgrading the Watch to Rank S, talk to the man at the bottom of the left room on the second floor/first floor of the Gourd Pond Museum in Breezy Hills to hear a rumor about the Old Mansion. Go there and enter the Side House, and interact with the folding screen to reveal stairs leading to the attic. There, you can fight Corptain once every day until he's befriended through the regular method.

Yo-kai Watch 2
After completing the main story, you will find a quest near the entrance to the Mt. Wildwood Sacred Tree Path. This will unlock the Yo-Kai realm where you meet Corptain and complete his request of stopping the fights in the 3 areas. After doing so, you will need to defeat the leaders in the 3rd area of the realm. After doing so, Corptain will be able to be battled and befriended each day through usual methods.

Quotes

 * Loafing: "Brief retreat!"
 * Receiving food (favourite): "First class!"
 * Receiving food (normal): "That was OK."

Name Origin

 * "Corptain" is a portmanteau of corpse and captain.
 * "Yomi Gensui" translates as.
 * "Genedáver" is a portmanteau of general (general officer) and cadáver (corpse)

In other languages

 * Japanese: 黄泉ゲンスイ Yomi Gensui
 * Korean: 황천대장군 Hwangcheon Daejanggun
 * Spanish: Genedáver
 * Italian: Capitavere
 * German: Corptain
 * Portuguese(Brazil):Chefespectro