Walter Koenig

""Now say nuclear wessels."

"NO.""

- Futurama

American actor (though his parents were Russian immigrants) who originated the role of Pavel Chekov on Star Trek, and Bester on Babylon 5.

This actor provides examples of:

 * Deadpan Snarker: His real-life tendency to be this was put to maximum effect on Futurama, where pretty much everything out of Koenig's mouth was a Crowning Moment of Funny.
 * He Really Can Act: After decades playing Chekov, many viewers were pleasantly surprised at what an effective bastard he played on Babylon 5.
 * Self Deprecation