Who is the second person to take up the mantle of Night Owl in the Watchmen graphic novel?

The second person to take up the mantle of Night Owl in the Watchmen graphic novel is Daniel Dreiberg. After the original Night Owl, Hollis Mason, retired, Dreiberg inherited his costume and gadgets, and became the new Night Owl. He was a former hero who continued fighting crime and upholding justice, bringing his own unique perspective and skills to the role.