Which character is a heroin addict and police informant?

Bubbles is the heroin addict and police informant in *The Wire*.

His real name is Reginald “Bubbles” Cousins, played by Andre Royo. Living on Baltimore’s streets, Bubbles uses his sharp knowledge of the drug trade to identify dealers and pass information to Detective Kima Greggs and other officers. In exchange, he receives small payments that help support his addiction.

Bubbles is not simply a one-note informant: he is intelligent, resourceful, funny, and deeply vulnerable. His partnership with Johnny Weeks leads to petty scams and dangerous encounters with the Barksdale crew. After Johnny is badly beaten, Bubbles becomes more closely involved with the police. Later, his guilt over the accidental death of Sherrod pushes him toward confession, despair, and eventually recovery.

The other choices are major criminals or street figures, but they do not fit both clues. Bodie and D’Angelo are connected to the Barksdale drug organization, while Omar Little is an independent stick-up artist who robs drug dealers. Bubbles is the character whose defining role combines heroin addiction with confidential police work.