Yes, there are other Killer objects that were spawned in a previous iteration of that event. Each time the player moves one tile to the right, I want a new Killer to spawn at a random location and ALL previously spawned Killer objects to move one tile to the left.
When I press the right arrow key, the Player moves one tile to the right and a NEW Killer is successfully spawned. However, none of the Killer objects are moving. I must be missing something very basic.