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.
Williams in the '600 lb life williams story' is likely a person who is the focus of that particular story within the context of the '600 lb life' series. He might be someone who has been living with obesity at 600 lbs and is either on a journey to lose weight or is facing various challenges associated with his weight, like health problems, social isolation, or problems with mobility.
Herb Williams was a retired basketball player from the NBA. He played for the NBA from 1981 to 1999 and represented many teams. He was 2.08 meters tall, and his position was a forward. Herb Williams had an average of 10.8 points and 5.9 rebounding in his career. He announced his retirement at the age of 41 and 129 days, ending his career. In addition, Herb Williams had coached many teams in New York.
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.