According to his profile from the script, "Movar is a smooth, polished... a political general rather than a combat veteran." This would seem to explain the unusual, unexplained professional relationship between him and Commander Sela, and why he takes orders from her, in "Redemption II." In addition, because Sela is half-Human, Movar may have been assigned to keep an eye on her.
Movar is the second of two TNG Romulan officers to wear the "double-strap harness" over his uniform, possibly indicating his flag rank. The first was Admiral Mendak in "Data's Day".