The Alleytown Kids were young orphans pressed into a gang.
Mama Fortuna took in many children of Gotham's poor East Side, and trained them to become petty thieves and pickpockets for her personal gain. After Mama passed, Sylvia Sinclair, herself a former member, became leader. She allied the gang with Black Mask, which led to her downfall. After Black Mask was defeated, Holly Robinson used the Kids as an information network.