Unicycles are objects used for the unicycle race in Rescission. They are very unstable and hard to ride on, as shown in the episode. Leafy had gotten used to it, and Bubble won without knowing how to ride a unicycle.
Unicycles are bikes with only one wheel. It does not have supporting parts to hold on, only the seat and the wheel.
- Strangely this Unicycle does not have pedals.