DC Comics' celebrated the 80th-anniversary of Batman's debut in 1939's Detective Comics #27 with the over-sized Detective Comics #1000, an anniversary celebration that was the best-selling comic book of 2019.
The classic New Mutants reunite and embark on a mission in deep space with the Starjammers in Jonathan Hickman, Ed Brisson, and Rod Reis' New Mutants #1 from Marvel Comics, the best-selling comic book of November 2019.
Heavy Metal's Taarna Volume 1, collecting the first four issues of the comic book series featuring the legendary immortal warrior from the pages of the magazine, was November's best-selling non-premier graphic novel.
Superman's confrontation with Dr. Manhattan changes the DC Universe forever in Geoff Johns and Gary Frank's Doomsday Clock #12 from DC, the final issue of the best-selling series and the best-selling comic book of December.
Marvel Comics' House of X/Powers of X, a hardcover collection of the two mini-series by Jonathan Hickman, Pepe Larraz, and R.B. Silva that heralded a revitalization of Marvel's mutant franchise, was the best-selling graphic novel of December.