Lucas Foster

Leeroy Henry Foster (service number 01154-19974-LF) is a UNSC Navy officer that served during the later years of the Human-Covenant War and Post-Covenant War conflicts. Leeroy took part in the Siege of Jacinto as Admiral Geir Gulbrand's executive officer aboard the UNSC Bucharest, flagship of the UNSC 30th Fleet.

Months following the Siege of Jacinto, Foster was promoted to the rank of Captain, and was given his own command in 2554, the UNSC Theseus, an Autumn-class heavy cruiser.