I don't think Darren Modok was featured in the comics. Usually, characters like this don't just pop up without notice or a lot of buzz among comic fans.
It's different in the sense that it's a graphic novel rather than a film. But it might share some common themes. For instance, like his movies, it could explore the human condition. However, the graphic novel format allows for a different kind of visual storytelling. In his films, he has more control over movement and time, while in the graphic novel, he has to rely on static images and the reader's imagination to create a sense of progression.
Minced Ginger Meat originated because Cao Changqing liked Minced Ginger's mother, who was the Empress of the State of Chu. Cao Changqing had always hoped to restore the State of Chu. He had been working hard for this for many years. The purpose of Ginger Mud and Cao Changqing's cooperation was to restore the country.