Is their only ? I personally believe that their is more than 1 but the one we see in that sphere and in kaits nightmares is the “Elite” or big bad. It has more pronounced back spikes compared to the horde counterpart.
Is it smarter? The swarmzerker shows great intelligence for a berserker. We see it size up and later grab kait in a parry like manoeuvre. I also belive it can see, unlike locust era berserkers.
Is it myrrah? The swarmzerker could be the new form for queen myrrah, though I doubt she will speak as the swarmzekrer as that would look ridiculous. Myrrah ofcourse communicates through the hive mind.
Is it Niles? Most likely this sphere that the berserker is first seen is under or around new hope. Meaning Niles must have placed it their long ago, assuming Niles lost his body way before gears 1. Maybe it was his back up. Maybe the sires were programmed to grow and eventually awake Niles as the swarmzerker.
Is it Raam? Many people immediately believe that the swarmzerker is Raam.
While RAAM is awesome, I don’t belive Rod and the writers would like to do something so lazy. Also it doesn’t really make sense seeing as RAAMs body would’ve been blown to shreds by the light mass.
Can it control the Riftworm(s)? In the trailer, we see the second of three rift worms. For it to be specially attacking at this time with the swarm it needs to be commanded. Only one person has commanded the rift worm, Skorge. We know he is long dead. So does the swarmzerker?