Robert John Wagner Jr. is an American actor. He is known for starring in the television shows It Takes a Thief (1968–1970), Switch (1975–1978), and Hart to Hart (1979–1984). He later had recurring roles on Two and a Half Men (2007–2008) and NCIS (2010–2019).
In films, Wagner is known for his role as Number 2 in the Austin Powers trilogy of films (1997, 1999, 2002), as well as for Prince Valiant (1954), A Kiss Before Dying (1956), The Pink Panther (1963), Harper (1966), The Towering Inferno (1974), and The Concorde... Airport '79 (1979).