Dominic West Det. James "Jimmy" McNulty Actor John Doman William A. Rawls Actor Idris Elba Russell "Stringer" Bell Actor Frankie Faison Comm. Ervin H. Burrell Actor Lawrence Gilliard Jr. D'Angelo Barksdale Actor Wood Harris Avon Barksdale Actor Domenick Lombardozzi Det. Thomas "Herc" Hauk Actor Deirdre Lovejoy Rhonda Pearlman Actor Wendell Pierce Det. William "Bunk" Moreland Actor Lance Reddick Lt. Cedric Daniels Actor Andre Royo Bubbles Actor Sonja Sohn Det. Shakima "Kima" Greggs Actor J.D. Williams Preston "Bodie" Broadus Actor Seth Gilliam Sgt. Ellis Carver Actor Clarke Peters Det. Lester Freamon Actor Jim True-Frost Det. Roland "Prezbo" Pryzbylewski Actor Michael Kenneth Williams Omar Little Actor Corey Parker Robinson Det. Leander Sydnor Actor Chris Bauer Frank Sobotka Actor Paul Ben-Victor Spiros "Vondas" Vondopoulos Actor James Ransone Chester "Ziggy" Sobotka Actor Amy Ryan Off. Beatrice "Beadie" Russell Actor Pablo Schreiber Nick Sobotka Actor Al Brown Maj. Stanislaus Valchek Guest Star Hassan Johnson Roland "Wee-Bey" Brice Guest Star Delaney Williams Sgt. Jay Landsman Guest Star Maria Broom Marla Daniels Guest Star Luray Cooper Nathaniel "Nat" Coxson Guest Star Erik Dellums Dr. Randall Frazier Guest Star Charley Scalies Thomas "Horseface" Pakusa Guest Star Chris Ashworth Sergei "Serge" Malatov Guest Star Gerard Ender Sam Guest Star Brook Yeaton Michael "White Mike" McArdle Guest Star Ed Bianchi Director David Simon Writer Ed Burns Writer Nina Kostroff-Noble Producer