Thresholder

The Thresholder is a Heartless boss from Kingdom Hearts II.

The Thresholder was a giant, two-headed, four-armed Heartless with even bigger arms and hands, which could extend from one side of a good-sized chamber to the other. Gargoyle Knights, Armored Knights, and Hook Bats appeared during the battle. In actuality, the Thresholder was simply the Possessor possessing the door to the dungeon in Beast's Castle, which Sora had to unlock out of the door twice to defeat.