R2-B30 (aka Three-Zero) was the astromech droid assigned to Horkon Sunskimmer during the final half of the Clone Wars as a replacement for Horkon's original droid, which was destroyed in a hangar fire. Three-Zero would meet it's own end when, in an attempt to prevent General Sunskimmer's escape from Order 66, Commander Doz ordered the destruction of the Amaran Jedi's Eta-2 Interceptor. Horkon Sunskimmer and his secret Jedi wife however managed to get away. Some months later, a young droid tech salvaged what parts she could from the wreck and it is yet to be seen if any of Three-Zero's memories are intact.