Thomas Sanatos
From Halo
Thomas Sanatos is a, "cultural anthropologist of 29 years and [an] avid puzzle breaker," according to the excerpt on Amazon.com of Jonas Volman's, "The Castaway Theory." He was the first person that Volman called upon to help him with his research.
http://www.amazon.com/Castaway-Theory-Jonas-Volman/dp/B000RGSYWI/