|This article is about a/an ally in Blue SWAT.|
Seiji Usami (宇佐美 星児 Usami Seiji?): Computer nerd who assists the Blue SWAT in their Blue Research group after he was saved by them. He had originally been listening in on the Blue SWAT headquarters, and quickly contacted the three survivors after their base was destroyed. After they saved him from an Alien which had possessed his boss, he began working with them as their analyst and guide for missions.