Dr. Xe'r'b'w'r's'o was a female non-human who was considered the leading authority on subspace at Thelian University in the mid-2360s. In 2365, Xe'r'b'w'r's'o had an article published on subspace accelerators, which contradicted a paper Sonya Gomez had written as a third-year cadet at Starfleet Academy. (SCE eBook: Many Splendors)

Xe'r'b'w'r's'o's species is not revealed, though she is described as being fur-bearing.