Comic fans attend the New York Comic Con at Javits Center in New York, the United States, on Oct. 3, 2019. The New York Comic Con (NYCC) kicked off here on Thursday. NYCC is the East Coast's largest comic book and pop culture convention in the United States. (Photos: Xinhua/Zhou Sa'ang)

People in costumes of Spider-Man and Spider-Gwen are seen at the New York Comic Con at Javits Center in New York, the United States, on Oct. 3, 2019. The New York Comic Con (NYCC) kicked off here on Thursday. NYCC is the East Coast's largest comic book and pop culture convention in the United States.

A model of the Joker in the Batman series is seen at the New York Comic Con at Javits Center in New York, the United States, on Oct. 3, 2019. The New York Comic Con (NYCC) kicked off here on Thursday. NYCC is the East Coast's largest comic book and pop culture convention in the United States.

A comic fan views some antique comic manuscripts at the New York Comic Con at Javits Center in New York, the United States, on Oct. 3, 2019. The New York Comic Con (NYCC) kicked off here on Thursday. NYCC is the East Coast's largest comic book and pop culture convention in the United States.

People in Spider-Man's costumes pose for photos at the New York Comic Con at Javits Center in New York, the United States, on Oct. 3, 2019. The New York Comic Con (NYCC) kicked off here on Thursday. NYCC is the East Coast's largest comic book and pop culture convention in the United States.

Cosplayers in costumes are seen at the New York Comic Con at Javits Center in New York, the United States, on Oct. 3, 2019. The New York Comic Con (NYCC) kicked off here on Thursday. NYCC is the East Coast's largest comic book and pop culture convention in the United States.

Comic fans visit an antique comic book booth at the New York Comic Con at Javits Center in New York, the United States, on Oct. 3, 2019. The New York Comic Con (NYCC) kicked off here on Thursday. NYCC is the East Coast's largest comic book and pop culture convention in the United States.