While it's hard to tell where the homage ends and genuine
cultural absorption begins with the Japanese and their (perfectly reasonable) obsession with Mobile Suit Gundam, I do find the use of Gundam as a
reference point interesting, because much as the mobile suit's use in Gundam is to
provide a vehicle that can operate equally well in space, under Earth's gravity, and in the artificial «gravity» of O'Neill cylinders, Vanquish is taking the commonly used Western term «space marine» quite literally, as Vanquish's power armor seems to be designed both as a spacesuit and as body armor, used to infiltrate a structure floating in space.