Star Trek, the iconic science fiction franchise, has captivated audiences with its imaginative exploration of space, the final frontier. Integral to the storytelling are the characters responsible for maintaining order and safety aboard their respective starships and stations: the security chiefs. From classic series to contemporary spin-offs, each chief of security brings a unique flair to the role. Here is a ranking of 11 Star Trek security chiefs, from worst to best.

11. Lieutenant Commander Nog (Star Trek: Deep Space Nine – Alternate Reality) – Although an alternate reality version and briefly seen in this role, Nog’s tenure as Chief of Security is not substantial enough to earn him a higher rank on this list.

10. Ensign Harry Kim (Star Trek: Voyager – Alternate Timelines) – While primarily serving as an operations officer, Harry Kim took on the role of security in alternate timelines. His lack of experience as a full-time chief lands him near the bottom.

9. Ensign Pavel Chekov (Star Trek Movies) – Primarily known as the navigator aboard the USS Enterprise in The Original Series, Chekov manned the tactical station in the films. His time at this post was satisfactory but not extraordinary.

8. Lieutenant Junior Grade Worf (USS Enterprise-D) – Before his prominent role on Deep Space Nine, Worf had a brief stint as acting security chief which was often overshadowed by his later achievements.

7. Lieutenant Commander Malcolm Reed (Star Trek: Enterprise) – As the first-ever tactical officer and security chief on the Enterprise NX-01, Reed laid the groundwork for future chiefs though he occasionally struggled with interpersonal relationships.

6. Tuvok (Star Trek: Voyager) – Tuvok’s composed and logical approach to security aboard Voyager showcased his effectiveness but did encounter challenges integrating his Vulcan ways with those of his diverse crewmates.

5. Lieutenant Natasha Yar (USS Enterprise-D) – Yar served with distinction albeit briefly due to her premature death, showing both compassion and fervor in protecting her ship and crew.

4. Lieutenant Ash Tyler/Voq (Star Trek: Discovery) – A complex character with a fraught identity, Tyler brought a deep understanding of both human and Klingon tactics but his internal conflict sometimes compromised his duties.

3. Commander Shran (Andorian Imperial Guard) – A guest character providing strategic assistance more than once, Shran earns a high place for being tenacious and having impactful cameos aiding Starfleet officers.

2. Lieutenant Commander Worf (Deep Space Nine) – Thriving at his position on DS9, Worf showed significant growth from his early days on the Enterprise, becoming integral in numerous conflicts and solidifying himself as one of Starfleet’s finest security officers.

1. Chief Miles O’Brien (Deep Space Nine) – Though better known for his engineering skills, O’Brien occasionally covered for station security demonstrating flexibility and resourcefulness that makes him top our list due to his unmatched ingenuity and down-to-earth approach.

Each chief in this illustrious group brought something special to their roles—whether it was through strategy, strength or sheer resilience—helping shape Star Trek’s universe into the rich tapestry it is today.