Star Trek: Discovery's Ruon Tarka isn't the first actor from The Expanse to play a similar character in both franchises. As the DMA investigation forges ahead in Star Trek: Discovery season 4, Paul Stamets finds himself compelled to work alongside a rival Federation genius by the name of Ruon Tarka.
Played by Shawn Doyle, Tarka is an arrogant, eccentric scientist whose ability to get results is only matched by his astonishing disregard for safety. Though Tarka purports to work for the
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