Ghrex was a female Denobulan engineer who served with the Starfleet Corps of Engineers aboard the USS Lovell in the 2260s. In 2263, Ensign Ghrex piloted the "Mole", a mining vehicle, in the effort to excavate the caved-in areas of Federation Outpost 5. (SCE eBook: Foundations, Book One) In 2265, Ghrex participated in the Lovell's mission to Vanguard. (SCE eBook: Distant Early Warning)