Few could have imagined that NCIS, which debuted in 2003, would go on to become one of the most lasting crime series on television. The ensemble that made the show a worldwide sensation is being re-examined by viewers more than 20 years later, and the changes they have seen are astounding.

Though he is no longer in the spotlight, Mark Harmon, who played Special Agent Leroy Jethro Gibbs on NCIS, has left an enduring legacy. At 73, Harmon, who was formerly the tough squad leader, now prefers a more subdued lifestyle and displays a gentler, more laid-back side. Longtime admirers were taken aback by Michael Weatherly’s new appearance when he made his TV comeback as the endearing Anthony DiNozzo.

Pauley Perrette’s iconic portrayal of goth lab worker Abby Sciuto is a far cry from her spiky-haired persona. After retiring from acting, her natural hairstyle shocked admirers when it was recently shown in pictures. Furthermore, who could overlook Cote de Pablo? In her 2025 appearances, the actress who portrayed the brave Ziva David has gracefully matured and dazzled viewers with her classic beauty.

The NCIS cast has changed throughout the years, from young, inexperienced actors in 2003 to seasoned pros now, demonstrating that even Hollywood’s most ruthless agents are affected by the passing of time. Fans are filled with nostalgia, awe, and a desire to return to the original series as a result of their on- and off-screen adventures.