Walter Marvin Koenig (born September 14, 1936 in Chicago, Illinois, USA) is the actor and writer best known for playing Pavel Chekov on "Star Trek: The Original Series" and in the first seven Star Trek films. He was the only original cast member not to lend his voice to "Star Trek: The Animated Series" due to budgetary reasons.
- Star Trek II: The Wrath of Kahn - RiffTrax
- Star Trek V: The Final Frontier - RiffTrax
- Star Trek VI: The Undiscovered Country - RiffTrax
- Star Trek: Generations - RiffTrax
- Star Trek: New Voyages: To Serve All My Days - RiffTrax