Ryhno Swarmers were brown, small robots that are very similar to Tri-Spike Swarmers, Claw Tooth Swarmers and Shriekers. In fact, a Ryhno Swarmer looks like a robotic Shrieker. Ryhno Swarmers attacked by approaching their target and then attempting to bite their enemy. Ryhno Swarmers were very weak and can be killed with one swipe of the OmniWrench 8000.
- Ratchet: Deadlocked (first appearance)