NCIS Season 4 Characters & Cast — No Spoilers
Every character in NCIS season 4 with photos and the actors who play them, including Mark Harmon, Sean Murray, Michael Weatherly — spoiler-free, nothing from later seasons.
- Leroy Jethro Gibbs — played by Mark Harmon
- Timothy McGee — played by Sean Murray
- Tony DiNozzo — played by Michael Weatherly
- Ziva David — played by Cote De Pablo
- Dr. Donald 'Ducky' Mallard — played by David McCallum
- Abby Sciuto — played by Pauley Perrette
- Jenny Shepard — played by Lauren Holly
- Jimmy Palmer — played by Brian Dietzen
- Jeanne Benoit — played by Scottie Thompson
- Michelle Lee — played by Liza Lapira
- Trent Kort — played by David Dayan Fisher
- Hollis Mann — played by Susanna Thompson
- Cynthia Sumner — played by Stephanie Mello
- Regine Smidt — played by Sandra Hess
- T.C. Fornell — played by Joe Spano
- René 'La Grenouille' — played by Armand Assante
- Martin Quinn — played by Corey Stoll
- Michael Franks — played by Muse Watson
- Mamoun Sharif — played by Enzo Cilenti
- Marty Pearson — played by Michael Gilden
All seasons of NCIS: full spoiler-free character guide