Thoucus is a unit that belongs to the Jupiter Republic. The name of the unit is derived from "Thousand Custom." As its name suggests, Thoucus was developed as a specialized combat force with enough strength to battle against 1000 enemy machines with a single mobile suit. Its members are composed of branded criminals who wear masks to conceal their identities. In order to test its development progress and the opportunity to engage in live combat, Thoucus arrives at the Earth Sphere to participate in the struggle for "Angel's Call."
- It is implied by Jack Friday that Thoucus pilots possess the ability to "read the flow of Psycommu waves", negating the advantage of all-range attacks against the unit.
- The name サーカス can be read as "Circus" as well, this allude to how all of their mobile suits have "freak show" motif.