Lina Lamont

Lina Lamont is the primary antagonist in the 1952 musical film, Singin' in the Rain. She was played by the late Jean Hagen.

Singin' in the Rain
She was the leading lady for Don Lockwood (Gene Kelly). She's vapid, shallow and high voiced. After she found out that Don was dating another girl, Kathy Selden (Debbie Reynolds) and she was voicing over Lina for the film she and Don were starring in The Dancing Cavalier, by their boss R. F. Simpson, she plans to destroy the romantic relationship of Don and Kathy and have lawyers sue R. F. unless he cancels Kathy's buildup and keep Lina working (uncredited). At the premiere of The Dancing Cavalier, Lina sang to the audience Singin' in the Rain, with Don, Cosmo Brown (Donald O'Connor), and R. F. have Kathy behind a curtain sing over Lina. Then, Don, Cosmo and R. F.  gleefully raise the curtain, then Coasmo replaces Kathy to the microphone and the sham becomes obvious. In the end, Lina flee in embrassement.