The Lethagoes were a mysterious hybrid species and a mix between Humans and Kalai. Lethagoes were Human in form but quite tall and thin. Nevertheless, they possessed a titanic strength that belied their thin frames. Their faces were thin and pale with a sharp nose, severe eyes and a jutting chin. Their appearance struck some as being quite birdlike, causing a theory to arise that the Kalai were an avian species.[1]
Not much was known about them, and often their Human parents were unaware of the existence of the Lethagoe offspring as was the case of the news reporter, Horatio Varn-Kezzler, who learned that a Lethagoe interviewee of his was actually his own son.[1]
The Lethagoes were primarily encountered at Zirtran's Anchor where they served as representatives of the mysterious Kalai.[1]
Sources
"Zirtran's Anchor" — Star Wars Adventure Journal 5 (First mentioned)
