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Two… wait… three? Saavik was a foster, does that count?
(i.imgur.com)
Star Trek memes and shitposts
Come on'n get your jamaharon on! There are no real rules—just don't break the weather control network.
She was once. Then she was played by Robin Curtis in her two later appearances. Which at the time was unusual in Star Trek.
Now loads of characters have had two or three different actors play them.
Though at this point it's usually because the original actor is dead. Saavik, Alexander, and Ziyal were the only significant recasts for ages.