Unit 99 is a named Siren found on Niira.
"Species designation: Caecusa lantanus. Top speed: 78 kilometers per hour. Confirmed kills: 107." ― Kaiser
Background[]
Following the Armistice, xenowarfare was banned. As such, many of the alien life studied and experimented on were scheduled to be culled. Kaiser was send to Niira to eliminate the Siren Units. He was eventually assaulted by Heatleeches, preventing him from finishing his mission. As a result, Unit 99 was allowed to flourish, and a Siren population soon took over on Niira. At some point, the Ecliptic captured Unit 99, as they were hired by a contracter to capture a collection of sirens. This contracter wanted these Sirens to perform tricks at parties, much like circus animals.