In House M.D., which character is also known as “Thirteen”?

Remy Hadley is the House M.D. character also known as “Thirteen.” The nickname comes from her position as number thirteen during the selection process for House’s new diagnostic fellows.

Olivia Wilde played Hadley, who joins the diagnostic team after the original fellows’ era. Thirteen is a skilled physician whose personal history and Huntington’s disease diagnosis become important parts of her character arc. Her reserved personality and complicated medical circumstances distinguish her from the more openly competitive applicants.

The nickname is often treated as her primary identity within the department, but her actual character name is Remy Hadley. That distinction matters because “Thirteen” is a team label, while “Hadley” is the surname used in professional and personal contexts.

The character’s story includes relationships with other doctors and periods away from the hospital. Olivia Wilde’s role in House helped establish her before later film work made her internationally prominent.