What is the real name of the character nicknamed Thirteen in House M.D.?

The character nicknamed Thirteen in House M.D. is Remy Hadley.

Thirteen joins House’s diagnostic team during the show’s fourth season and becomes one of its most prominent later doctors. The nickname comes from the numbered applicant identity she used during the team-selection storyline.

Olivia Wilde played Remy Hadley. The character’s personal history includes Huntington’s disease in her family, an important storyline that affects her medical choices and relationships. Her professional ability and guarded personality also become recurring parts of the team’s dynamics.

“Thirteen” is the name most often used on screen, but it is a nickname rather than her legal first name. The canonical character name is Remy Hadley.