Tommy Carcetti

Tommy Carcetti is a politician who hopes to become mayor of Baltimore throughout the series. He features major character changes, from a relatively seedy person accepting bribes to a solid citizen who tries to do, relatively, what is right. His ambition to become mayor makes him a like-able character. He lives in a large house with his wife and child, and speaks rapidly, but poignantly. He deals with issues like cheating on his wife when we first meet him in the series, but moves past that and becomes a better person later on.

Ellis Carver

Carver and Herc are inseparable throughout the early seasons after they are assigned together on the Barksdale case. Carver forms bonds with many of the street pushers, although he is rude and mean to many of them, he doesn't mean it in a totally malicious fashion. Carver faces issues with skimming drug money off busts with Herc and other issues arise regarding Herc and Carver throughout the series progression.

D'Angelo Barksdale

D'Angelo is Avon's nephew and a dealer in his empire. He watches over Bodie and Wallace in the Low Risers. His character unfolds throughout the series, and the audience comes to know him at a deeper level then he shows on the streets. He speaks eloquently and occasionally uses slang, and he has a son with a woman, and faces family issues with the Barksdales' later in the series.

Lester Freamon

The stereotypical "Sage Old Man", Freamon is smart, but 'past his prime'. He is always very sincere and only speaks when he needs too. Little to knowing is really ever found out about his personal life besides his copy of carving model furniture. Rawls re-assigned him to 'Pawn Shop Division' after Freamon angered him and Freamon hasn't had a big break since.

Shakima "Kima" Greggs

Greggs is an officer in the group charged with investigating the Barksdale empire. She is gruff yet nice to her colleagues in a "Empowered black woman" role. She is a lesbian who's personal life is deeply effected by the case.

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Thomas "Herc" Hauk

Herc is an officer in the group charged with investigating the Barksdale empire. He and Carver are almost inseparable. Herc is usually portrayed as the 'meathead' although he never abuses this. Not much is shown about his life outside the force (Until later seasons) but he and Carver make poor decisions which lead to a less than stellar outcome by the end of the series for Herc.

Cedric Daniels

Lt. Cedric Daniels leads the police group charged with investigating the Barksdale empire. He is loyal to his group but doesn't respect any sort of backstabbing or rule bending. He is by the book, but fiercely protective of anyone under his wing. He speaks clearly and lives well in a relatively nice neighborhood. His ambition is to advance through the police ranks, which he does, although not to a point where he would have liked.