Quadraxis is a boss in Metroid Prime 2:Echoes. It is a robot.
- Quadraxis' head possesses three "eyes" connected to form a triangle. This symbol, resembling the Luminoth letter "F", is found on many other artifacts of that species, and on the Luminoth themselves.
- Disassembled parts of Quadraxis can be seen scattered throughout the Fortress Temple entrance, suggesting that the Luminoth were in the process of making more than one.
- In the recent blockbuster "Prometheus" by Ridley Scott, the spaceship Prometheus strongly resembles Quadraxis, especially when you look at the knee joints.