Atmino, holding the ranks of both colonel and senior officer, was among the few upright patrollers within Janusar. His service was cut short, however, due to compulsory retirement implemented upon Cav'Saran's rise to power.
During the year 0 ABY, Atmino's path crossed with Daric LaRone, an ex-stormtrooper. LaRone appointed Atmino as his successor when the Hand of Judgment successfully ousted Cav'Saran.