As Sora was about to enter the Dungeon Doors, a Possessor possesses the doors to become the Thresholder. Thresholder attacks Sora and his friends by extending its arms across the room and summoning orbs of darkness. When it is dealt enough damage, Sora forces the Possessor from the door. After Sora deals enough towards the Possessor, the Possessor fades into darkness, which causes the Thresholder to disappear in to the darkness as well.