Alternate Reality(split 2233)
Tyvanna was an alien female who, in the alternate reality, was serving in the command division aboard the USS Enterprise shortly before that starship was destroyed in 2263.
Tyvanna was at her post on the bridge of the Enterprise, which was the room's foremost starboard station, when the ship arrived at Starbase Yorktown. She returned to the bridge just as the ship was entering the Necro Cloud nebula.
During the ensuing Battle of Altamid, she was among the first to leave the bridge, when the order was given to evacuate the ship. (Star Trek Beyond)
Tyvanna was played by actress Anita Brown.