The OOM-series battle droid was a predecessor of the B1 battle droid. OOM command battle droids and OOM pilot battle droids were both part of the line, and were used during the Invasion of Naboo and throughout the Clone Wars. OOM command battle droids and OOM pilot battle droids both had a different purpose. This was shown by their both's markings of a different color.
- Star Wars: On the Front Lines (Indirect mention only)
- Star Wars: The Complete Visual Dictionary, New Edition (First identified as OOM-series battle droid)