LS-121 was a golden protocol droid owned by the Metatheran Cartel.


LS-121 served in the Personnel Office of the Cartel's jungle base on Cularin alongside Y4-E and 3B-IR during the time of Velin Wir's plot to take over the economy of the planet Cularin in 31 BBY. At this point, LS-121 had been with the Cartel for some time, and was well versed in the organization and assignments of Cartel personnel. When the Cularin resistance successfully attacked the jungle base, they captured the base's guards and other personnel and escorted them out before the base was destroyed by a turbolaser bombardment from above.