Doctor Penn Pershing is one of the two secondary antagonists (alongside Elia Kane) of the 2019 Disney+ Star Wars streaming series The Mandalorian.
He is a scientist and clone engineer affiliated with a remnant of the Galactic Empire under Moff Gideon. Eventually, however, Pershing would betray Gideon and play his role in helping his enemies capture him by providing them with intel on his whereabouts.
Following Gideon's arrest, Pershing joined the New Republic's Amnesty Program, where he was designated as Amnesty Scientist L52, in an attempt to reform himself, though the Republic's refusal of his clone research which he thought would be beneficial to their cause later comes to haunt him thanks to Elia Kane's intervention.