Mechanic: Spawns at A-000 than rushes to the current room, once he reaches the current room he will proceed to rebound 3.5 times before actually despawning.
Hey here's a quick notice 0.5 rebound is what a rusher with do so rushes than despawns! So, A-150 would do 3 rebounds than do a 0.5 after those 3 rebounds.