This entity is exclusive to Endless Mode. Mechanic: Starts at the lobby, then powers up before starting movement, darting towards the current room, rebounding when it hits the closed door. After it backtracks to the lobby it goes back to the unopened door and despawns. Speed in Rooms per Second: 64 Chance: starts off at 1/221, at A-200 it halves (and also rounds itself down), becoming 1/110, but then it drops drastically at A-400, changing to 1/10.
