Which character did Jesse Spencer play in House M.D.?

Jesse Spencer played Robert Chase in House M.D.

Chase is an Australian physician who joins House’s original diagnostic team at Princeton-Plainsboro. He is introduced as a critical-care specialist and later develops additional expertise, eventually becoming an important surgeon and diagnostic physician within the hospital.

Spencer, an Australian actor, remained part of the regular cast through the series. Chase’s character changes substantially over time: he begins as a younger doctor who sometimes relies on institutional connections, but he becomes more independent and confident in his medical judgment.

The character’s name is often shortened to Chase, which can make him easier to confuse with other team members. Eric Foreman was played by Omar Epps, James Wilson by Robert Sean Leonard, and Chris Taub by Peter Jacobson. Jesse Spencer’s House M.D. role was Robert Chase, not any of those colleagues.