NCIS Season 1 Characters & Cast — No Spoilers
Every character in NCIS season 1 with photos and the actors who play them, including Mark Harmon, Michael Weatherly, Sasha Alexander — spoiler-free, nothing from later seasons.
- Leroy Jethro Gibbs — played by Mark Harmon
- Tony DiNozzo — played by Michael Weatherly
- Caitlin Todd — played by Sasha Alexander
- Dr. Donald 'Ducky' Mallard — played by David McCallum
- Abby Sciuto — played by Pauley Perrette
- Gerald Jackson — played by Pancho Demmings
- Timothy McGee — played by Sean Murray
- Tom Morrow — played by Alan Dale
- T.C. Fornell — played by Joe Spano
- Jimmy Palmer — played by Brian Dietzen
- Paula Cassidy — played by Jessica Steen
- Christopher Pacci — played by Tim Kelleher
- Mysterious Redhead — played by Vivienne Bellisario
- Ari Haswari — played by Rudolf Martin
- Director Charlie — played by Gregory Itzin
- Andy Kochofis — played by Asante Jones
- Daniel Snyder — played by Robert Cicchini
- Debra Green / Female Reporter — played by Sheila Frazier
- Melissa Dorn — played by Stacy Haiduk
- Deer Hunter — played by Tommy Hinkley
All seasons of NCIS: full spoiler-free character guide