Alpha-12 was an Alpha-ARC who fought during the outbreak of the Clone Wars. He commanded the 227th Clone Battalion, a sub-division of the Third Army. He served under Jedi Generals Obi-Wan Kenobi and Anakin Skywalker. He was a comrade of Delta-3530, Alpha-17, Alpha-27, Alpha-47, Alpha-77, Alpha-78, and Alpha-98. Ironically, Alpha-12 would be forced to rely on several Odeinian batches of clones to resupply his 227th battalion, which was nearly depleted during the outbreak of the Clone Wars.