NCIS Season 18 Characters & Cast — No Spoilers
Every character in NCIS season 18 with photos and the actors who play them, including Mark Harmon, Sean Murray, Wilmer Valderrama — spoiler-free, nothing from later seasons.
- Leroy Jethro Gibbs — played by Mark Harmon
- Timothy McGee — played by Sean Murray
- Nick Torres — played by Wilmer Valderrama
- Jimmy Palmer — played by Brian Dietzen
- Dr. Donald 'Ducky' Mallard — played by David McCallum
- Ellie Bishop — played by Emily Wickersham
- Leon Vance — played by Rocky Carroll
- Kasie Hines — played by Diona Reasonover
- Jack Sloane — played by Maria Bello
- Marcie Warren — played by Pam Dawber
- T.C. Fornell — played by Joe Spano
- Jessica Knight — played by Katrina Law
- Jonny Zucado — played by Vito D'Ambrosio
- Merriweather — played by Nick Boraine
- Karen / Sasha Myshkin — played by Anna Grace Barlow
- Veronica Tyler — played by Victoria Gabrielle Platt
- Elaine — played by Connie Jackson
- Emily Fornell — played by Juliette Angelo
- Delilah Fielding — played by Margo Harshman
- Shift Manager Chad / Chad / Vladmir Izikov — played by Isiah Adams
All seasons of NCIS: full spoiler-free character guide