Chumbley

Chumblies were the nickname Vicki gave to the Rills' small robot servants, named so after their wobbling movements. One of the tasks the Rills gave them was to deliver messages. They amttempted to deliver one to the Drahvins multiple times but were just fired at.
 * They were pretty resistant to the gunfire and just reactivated when the firing stopped.

They were made up of circular rings that grew smaller towards the top. The rings could all fold down into each other in protection. (DW: Galaxy 4)