Reinhart Puck was a a short, round, elderly man. He had a vastly hooked red nose, and a fringe of long white hair descended from the gleaming dome above it. He worked in the New York Museum of Natural History in the Central Archives, he often asked Oscar Gibbs for assistance.
He assisted Nora Kelly, Pendergast and Patrick O'Shaughnessy find out more information about Cabinet of Curiosities. He also assisted Anthony Fairhaven with the same thing, Fairhaven later killed Puck because he knew that Fairhaven was researching Enoch Leng (and almost killed Nora in the process). Puck was an unfortunate death in the Surgeon Copycat Killings.