Remo, identified as a Clone Lieutenant, was a clone trooper fighting for the Grand Army of the Republic. In the course of the Clone Wars, he became part of a battalion led by Clone Captain Styles, Clone Commander Grey, and the Jedi Master Depa Billaba.
During the events of Kanan 2, Remo followed Clone Protocol 66 when it was initiated, betraying Billaba and her Padawan, Caleb Dume. While attacking Billaba on the planet Kaller, the clone met his death as a result of blasterfire being deflected. Conversely, Remo's appearance was absent from the Kaller Order 66 sequence in Star Wars: The Bad Batch's episode, "Aftermath."