JMM
From Wookieepedia, the Star Wars wiki.
JMM was a model of espionage droid.
The droid information broker 8t88 had his head replaced by that of a JMM droid as a prank. The head was cut off and eventually recovered by Kyle Katarn, who retrieved the coordinates of the Valley of the Jedi held in its memory banks.
[edit] Behind the scenes
This droid model was named after James McFadden, a.k.a. JMM at JMM's Star Wars Chronology.[source?]
