The Decimator was based off of the
Decimator in Galaxy, albeit split into two beings (The wolf and the Barghest), and has a necklace to symbolize the ability that the in-game Decimator has; the ability to call every alien on-map to one location.
Extended Footnote;
An Alien General, with ties to an unknown force, ready to strike at a moment's notice whether it is her own or another caller's.