What is the name of House M.D.’s recurring character played by Olivia Wilde?

Remy “Thirteen” Hadley is the recurring House M.D. character played by Olivia Wilde.

Thirteen joins House’s diagnostic team after the selection process that follows the departure of earlier fellows. Her nickname comes from the numbered candidate system used during that competition, and it remains her most familiar name throughout the show. She is portrayed as an exceptionally capable physician who is often guarded about her personal life.

A major storyline reveals that Thirteen carries the gene for Huntington’s disease, a progressive inherited neurological disorder. That diagnosis affects her relationships, career decisions, and views about medical uncertainty. The character’s name, medical skill, and personal story helped make her one of the show’s most memorable later team members.

Olivia Wilde played Thirteen from the fourth season onward, with periods away from the hospital because of imprisonment and other narrative developments. Thirteen is sometimes confused with Amber Volakis, another female doctor from House’s team-selection storyline, but they are separate characters played by different actors.