@Hamed Oddly, I've found how they're not exactly in the same spot every time... just right around the start point of the level... they're paying attention to the rotation of the hero. So all 3 particle systems are somewhere in the proximity of the starting point, relative to some weird distance that shouldn't be there (they should start right where the hero is) and then rotating via the hero as their anchor centre around him, based on whatever distance they succumbed to from the hero at start.
This might mean they are some kind of physics object that's falling before the start. Maybe. I don't know.