- OB 1 Kenobi
- OB 2 Skycaster
There are rumours of a third OB unit, 3PO, however nobody has seen it in a while and we're not sure if it's still exists.
Other units have been scratch built from spares and borrowed kit in the past, much like the temporary computers built for Roses every year. These machines tend not even to have names and are short lived and a bit of a bodge. They normally only come into being for Roses.