Walter Koenig, standing at exactly 5ft 6 (167.6 cm), brought a compact yet dynamic physicality to his iconic sci-fi roles. His precise height enhanced the youthful, agile image of Ensign Pavel Chekov in the original Star Trek series and subsequent films, where he navigated the starship Enterprise with energetic precision.
Koenig's stature also amplified the intense, unyielding presence of Alfred Bester in Babylon 5, making the psi-cop's authoritative demeanor strikingly formidable. One of the few surviving original Star Trek cast members, his height-defined versatility shines in a career blending acting and screenwriting.