Mother of Invention

Mother of Invention is the name of the Project Freelancer operated Frigate seen at the end of Season 9's fourth episode, Evacuation Plan. It's service number is RT 636, the street Address of Rooster Teeth Productions in Austin, Texas.

It appears to be a mobile base of operations for Project Freelancer, and provided support to a fleeing Echo-479 by destroying a pair of Longsword Interceptors with it's shipboard Magnetic Accelerator Cannon.

Upon closer inspection, the Mother of Invention's lower bridge is comprised of a large glass viewing platform unlike regular UNSC frigates. It seems the scoreboard that the Director and the Councilor use to rank the Freelancer agents is also positioned on this deck.