His crew typically comprises Baltimore stick-up artists whose motive for collaborating with Omar is the money associated with robbing drug dealers and stash houses.
Brandon was spotted by Wallace and Poot Carr playing pinball at "The Greek's" - a restaurant on the west side.
Stringer arrived with three Barksdale enforcers Marquis "Bird" Hilton, Roland "Wee-Bey" Brice and Anton "Stinkum" Artis.
Brandon was captured by Bell's crew, tortured, and killed, his body displayed in the low rise projects as a warning to Omar on Avon's instructions.
[2] Afterward, Omar escalated their feud, refusing to relent after the ruthlessness shown, repeatedly referencing Brandon's murder as unnecessarily harsh.
In season 3, Dante accidentally kills Tosha during a gunfight that ensues while they are fleeing a heavily guarded Barksdale stash house, after a failed attempt at a stick-up (confirmed by commentary from David Simon and further dialogue in Episode 7), exacerbating the rift between Dante and the surviving Kimmy.
Kimmy was adept at infiltrating drug dealing operations, using a number of disguises including that of a nurse to Omar's disabled veteran.
Tosha was accidentally killed by Omar's boyfriend Dante, in a shoot-out following a heist on a Barksdale stash, leaving Kimmy distraught.
[2] Kimmy reunites with Omar in an elaborate plot to steal Proposition Joe's large drug shipment meant for his co-op.
Following the successful heist, Kimmy takes her cut of stolen drugs and tells Omar that she will now retire from this profession.
[3] Donnie joins Omar in seeking revenge after the Stanfield Organization tortures and killed Butchie.