Definition: Zyryana is a fictional character from the science fiction series "Star Trek" created by Gene Roddenberry and first published in the magazine "Future" (1968). She is the main antagonist of the series, played by actress Keri Russell. Her role is to manipulate the crew of the USS Enterprise by using her advanced technology and powers to manipulate the temporal dimension. Despite being portrayed as a villainous character, she has shown compassion towards the crew and acknowledges her own mistakes