The Helmwige is a Valkyrja frame mobile suit developed right before the end of the Calamity War. It reappears in the current age as Helmwige Reincar when the Grimgerde, another Valkyrja frame mobile suit, was retrofitted into its likeness to serve as an escort-use unit and to battle the mobile armor Hashmal. The word "Reincar" in the suit's name originates from "Reincarnation", and was added as a reference to its reappearance more than 300 years after it was first developed, as well as a nod to the suit being a retrofitted (reincarnated) Grimgerde. Data of the Helmwige in Gjallarhorn's database was used as a reference during the retrofit process, and the completed suit is owned by the Montag Company.

While the Grimgerde’s design emphasizes lightweight and high mobility, the Helmwige Reincar is the complete opposite, focusing instead on heavy armor and equipment. As a result, the reactor output used to secure mobility in the Grimgerde is reconfigured for frame output so as to support the Helmwige Reincar’s heavy armor and use of heavy equipment. The suit’s enhanced defensive capabilities are pivotal for both escort missions and anti-mobile armor combat.