IG-138
From Wookieepedia, the Star Wars wiki.
IG-138 was an IG-100 MagnaGuard who helped General Grievous train in lightsaber combat.
During a lightsaber training session witnessed by Count Dooku, Grievous cut both IG-138 and IG-109 to pieces.
[edit] Behind the scenes
- Both the droid's name and the "what's wrong?" line are references to THX 1138.

