Marika Wilkarah was a female Bajoran Starfleet engineering officer in the 24th century. She was married, and both officers served aboard the USS Excalibur. Wilkarah was one of the many individuals to be assimilated by the Borg, but was eventually freed. The Excalibur survived an attack by the Borg during a night shift sometime prior to late 2368. Several members of the crew, including Wilkarah, were assimilated in the encounter. As a Borg drone, she was a member of Seven of Nine's unimatrix, where she was assigned the designation of Three of Nine, Auxiliary Processor of Unimatrix Zero One.