Frank Castle and John Wick have been shown to be very similar to each other in more ways then one. One fateful night, the two end up in an alternate crime fueled version of Equestria and learn that there is more to the story along the way. Not only that but the two now have to face an world that's familiar to both of them in different waya they hadn't expected

The Punisher, John Wick and MLP belong to their respectful owners.

Rogue Diamond by its rightful owner

I will take this story off if necessary

Ps not canon to original Rogue Diamond comic

Plus John and Frank have harem, possibly, I'm still thinking who to add