Thresholder

The Thresholder is a minor villain in the video game; Kingdom Hearts II. It's a Pureblood Heartless that acts as one of the many secondary bodies for the Possessor.

History
As Sora was about to enter the Dungeon Doors, a Possessor possesses the Doors to become the Thresholder. Thresholder attacks Sora by extending its arms across the room and summoning orbs of darkness. When it's 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 as well