This page of the Biomutant game guide describes the side quest The Spiral Groover. Here we've described everything you need to do to complete the task and earn rewards.
Starting the quest
How to start: Talk to Smurki, in Hobydonk.
Reward: 100 XP.
To start the quest you need to talk to the man in Hobydonk. He will give you a task related to finding the Groover.