Vallera is believed to occupy a position within the Romulan hierarchy similar to that of the Romulan operative known as Sela; the prime difference being that Vallera's political backing comes from both her own immediate family, and her uncle, the Preator, whereas Sela is supported by her father, a powerful Romulan general. Her assignments and special projects are mostly limited to interior Romulan matters, but on occasion, she has commanded missions outside Romulan space.

Analysts and information from firsthand meetings have shown her to be extremely manipulative and cunning; Vallera should be trusted under no circumstances.