It used to be published Monthly . Monitor,Harbinger,Pariah,Superman (Kal-El),Superboy-Prime,Alexander Luthor Jr.,Flash (Barry Allen),Psycho-Pirate,Anti-Monitorare the main characters of the book . This book was published in April 1985 – March 1986 . The name of the book is Crisis on Infinite Earthsand it was published by DC Comics . The no. of issues of the book is 12 . It is a Limited series
There are 9 characters in the book