Holt was a scientist. This individual, along with Abrahamian, described conditions where causality cannot be established for tachyons, on the BD Wray manifold, possessing conformal symmetry in the past and future.

This individual's name was mentioned in journals read by Lieutenant Commander Data as he was searching for clues on how to detect cloaked Romulan warbirds during the Klingon Civil War in 2368. (TNG-R: "Redemption II")

This character was only mentioned in writing.
This scientist was named after James Holt, a digital compositor and flame artist at CBS Digital.