The Faceless Ones were a race of people who lacked faces due to a comet's close passage to their homeworld and whose religious taboos forbade surgery to replace their faces. After the incident they took refuge on Vulcan where none would judge them. In 2281, T'Shael took Cleante al-Faisal to visit the Faceless Ones. (TOS novel: Dwellers in the Crucible)