In House M.D., Jesse Spencer plays Robert Chase, the Australian member of House’s original diagnostic team.
Spencer was born in Melbourne, Australia, and his real background helped inform the character’s established Australian identity. Chase is one of the three fellows recruited by House at the start of the series, together with Cameron and Foreman.
Chase initially appears comparatively compliant and pragmatic, but his character develops substantially over the show’s run. His medical interests, family history, relationships, and changing professional responsibilities receive increasing attention as the series progresses.
The role helped Spencer gain international recognition before he later became widely known for playing Matthew Casey in Chicago Fire. House viewers may also encounter Chase’s name in connection with surgery, the specialty he increasingly practices later in the series.