The Lindworm Unit (リンドブルム･ユニット Rindoburumu Yunitto?), led by Raina Cromwell, is composed of Dragonauts and their corresponding Dragons, whose main purpose is to destroy Thanatos when the time comes. They are also tasked with fighting off enemy Dragons that come from the asteroid.
In European mythology, 'Lindworm' is a large serpent-like dragon.