The Admiral, played by Walter Marvin Koenig. Walter Marvin Koenig is credited with writing an episode of the series titled "The Infinite Vulcan", making him the first cast member to write a Star Trek story for television. He received Saturn Award nominations for Best Supporting Actor in a Film for both Star Trek II: The Wrath of Khan and Star Trek IV: The Voyage Home. Koenig played the role of Chekov for the fan webseries Star Trek: New Voyages, "To Serve All My Days", and the independent Sky Conway/Tim Russ film Star Trek: Of Gods and Men, both in 2006, and Star Trek: Renegades, in 2015. According to the teaser for Renegades episodes 2 and 3, he will appear playing the role of Chekov.