Little of his life is known. He was a friend of Violet Baudelaire's, and gave her elevator blueprints for her birthday. Though they were later destroyed in the fire, her study of them assisted her in finding the kidnapped Quagmire triplets.
It is later stated that after the death of the Baudelaire parents, most of the Baudelaire children's friends had fallen by the wayside, meaning they stopped writing, calling, or stopping by to see them, which made them very lonely. It is possible that this is why Ben makes no appearance in the series.