Oberos is a junk-collecting Bydo. It can collect and process metal materials inside its body, which it then leaves behind in its wake in the form of large blocks. Some of these blocks can be destroyed, and look suitably fragile, but others cannot, even with Wave Cannon shots. As such, they are instrumental in the formation of Bydo bases and try to box in invaders. Its antithesis, Kayberos, cleans up after it.
A metal insect, which creates a nest with the metal from its body.
- Cytron is functionally identical, but instead leaves behind organic webbing.