The NCIS Supporting Characters Who Have Appeared in More Episodes Than Several Main Cast Members, After 21 Years & Counting
- Dr. Donald “Ducky” Mallard (David McCallum) The beloved medical examiner has been a staple on the show since its inception, appearing in more episodes than many main cast members.
- Jimmy Palmer (Brian Dietzen) Starting as Ducky’s assistant and later becoming the chief medical examiner, Jimmy has become a core part of the team over the years.
- Abby Sciuto (Pauley Perrette) The quirky forensic scientist charmed audiences for many seasons, with her appearances outnumbering several main characters.
- Leon Vance (Rocky Carroll) Initially introduced as the NCIS Director, Vance’s role expanded significantly, making him a recurring figure across many episodes.
These supporting characters have not only enriched the show with their unique personalities but also outlasted many of the original main cast members, contributing to the enduring success of NCIS.