Characters played by actress Rosalind Chao who were introduced as a love interest to a regular or recurring character in one series, who then went on to appear more prominently in a spin-off that original series:
1. Soon-Lee Klinger
M*A*S*H, AfterMASH
2. Keiko Ishikawa O’Brien
Star Trek: The Next Generation, Star Trek: Deep Space Nine
Blue Towel Productions 
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