OOM-28 was manufactured immediately after OOM-27 (no offense, Awesome-o-saurus) and so was slightly newer. He was accidentally made a free-thinking droid, so he was slightly sharper than his comrades. He served at Naboo, Geonosis, Utapau & various other battles. His antenna was broken when all the battle droids were shut down, so he survived. He quickly saw through Palpatine's plot and joined the rebel alliance. He became friends with R2 & C-3PO & was made a new republic commander. He was extremely skilled at fighting yuuzhan vong because of their technophobia, and soon became famous.