What comic book publisher first published  "The Button", a 2017 comic book crossover and published "Doomsday Clock" an upcoming superhero comic book limited series?
The Button (comics) "The Button" is a 2017 comic book crossover created and published by DC Comics. The story arc consists of four issues from DC's Batman and Flash publications, functioning in part as a larger buildup towards the "Doomsday Clock" event. The plot was written by Joshua Williamson and Tom King, with art by Jason Fabok and Howard Porter.
Ultimate Comics: Doomsday Ultimate Comics: Doomsday is a metaseries collection of three 4-issue comic book limited series published by Marvel Comics. All three series ("Ultimate Enemy", "Ultimate Mystery" and "Ultimate Doom") are set in the Ultimate Marvel universe, and are written by Brian Michael Bendis with art by Rafa Sandoval.