The battle is fought in the center of a dusty, old library. When the battle begins, three colored Poes will appear; one green, one blue and one red. The Poes will constantly fly away from the Links while cackling madly. To defeat them, the Links can dash at them with the Sword, or team up to corner the Poe, but the Poes can only be damaged by the Link who matches their color. As ghosts, the Poes can move through the bookcases in the center of the room. After all three Poes are defeated, the Grim Repoe appears and collects their souls inside of a glowing pendant.
The Grim Repoe will blow out the torches and bring darkness to the room. It will then spin wildly around the room with its scythe. The Link with the Fire Gloves can relight the torches. The boss will reappear once enough light is returned. The Grim Repoe will then slowly float around the room, occasionally charging with its spinning scythe. The Link with the Gust Jar can then use it to stun the Grim Repoe, allowing the Links to attack its pendant. The Grim Repoe will then blow out the torches again, requiring them to be lit. As the Grim Repoe will hover through the air at a higher elevation, the Links must form a Totem of two to stun it with the Gust Jar. After several more hits, it will be defeated.
Grim Repoe is a portmanteau of Grim Reaper and Poe.