The question appears to be referring to two different 2019 comics featuring the character The Batman Who Laughs, an evil counterpart and alternate version of Batman from the Dark Multiverse:
The Batman Who Laughs #1 (of 6) (2019): This issue begins the main miniseries where the premier superhero Batman is being stalked by The Batman Who Laughs as the villain enacts a sinister, multi-dimensional plan.
The Batman Who Laughs: The Grim Knight #1 (One-Shot) (2019): This one-shot introduces the Grim Knight, who is described as being "ripped from Batman's greatest nightmares". He is depicted as his world's most dangerous vigilante, one who is unafraid to use any weapon and can fight like a fierce MMA champion while utilizing the shadows.
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