Bing is one of Tony Zucco's "brothers". He serves as the lion tamer of the group.
History[]
In A Matter of Family, he and Zucco's gang were trying to force the Flying Graysons to pay them money for protection. They refused, so they started a fight. Luckily, Dick had called the cops a few minutes ago, which was intercepted by the Batman. Batman took down Bing while the rest of the brothers escaped. He was then arrested. Zucco then wanted to "return the favor" of his family being divided by murdering the Graysons.