Wolverine is Batman in Rad Mash-up Art by Josselin Billard
Artist Josselin Billard came up with the brilliant idea of combining the badassery of Wolverine and Batman. The piece is called "Dark Claw," and it's based on a shared universe between DC and Marvel by Amalgam Comics in which the two comic book publishers combined their characters into new ones like this Dark Claw.
This was something that I was unaware of until it was pointed out to me in the comment section. This is one of those things I missed during the 90s because I was reading a lot of Image Comics stuff at the time, and I was doing a ton of traveling at the time.
It makes sense that Wolverine would dress up as the Dark Knight to hunt down villains and bring them to death's door. Unlike Batman, Wolverine is willing to kill to get the job done.