After a series of devastating groundquakes rocked the world of Aleen, Commander Wolffe and Wolfpack were sent to deliver relief supplies.
R2-D2 and C-3PO also took part in the mission, providing assistance in installing the new equipment and translating for the clones. While they were waiting for the new systems to install, the two droids went to look at an unsealed hatch, but as another groundquake stroke the pair fell down the hatch and into the Aleen underworld.
As the two droids wander through the tunnels they come across a trio of Kindalo who point them towards another resident of the underworld, who explained that the unsealed hatch had let in toxic air to the underworld so they had created the quakes. As she left the two droids are shot back to the surface and they seal the hatch.
- Star Wars: The Clone Wars – "Mercy Mission" (First appearance)
- Star Wars: The Clone Wars – "Nomad Droids" (Appears in flashback(s))