Dr. Hillary Massar was a Vektan born genetic researcher employed by the ISA, then later Stahl Arms. Dr. Massar was an arrogant Vektan arms specialist with a superiority complex to humans and Helghast alike. In some respects, this could be called a god complex. She regarded humans as evolutionarily inert, and halfbreeds as impure throwbacks that ruin the Helghast bloodline. She was controlling and abrasive, making undue demands of Helghast guards, and continuing her experiments on some Helghast as well as humans while in Stahl's custody. She often spoke with a condescending tone, and was manipulative enough to make Echo ashamed of her parentage.

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