On the battlefield, one of the queen's primary functions was to implant parasites in its enemies. Able to be launched from a distance, a tiny, remora-like parasite attached itself to the target, 'bonding' with it should the target be organic. The parasite allowd higher zerg strains to see whatever the host saw and at the time of its first use in the Koprulu sector, could not be removed without killing its host. The parasite can also provide a link for the zerg to "talk" to the host.