One possible plot could be that the Doom Slayer somehow gets transported to the world of Goblin Slayer. He then uses his advanced weaponry and combat skills to help the Goblin Slayer in his never - ending fight against the goblins. Maybe they team up to take on a super - powerful goblin boss that neither could defeat alone.
The X-Men are part of the Marvel Comics lineup. They have their own unique place within the Marvel multiverse, with a dedicated fan base and a significant impact on the comic book world.
X-Men is not associated with DC Comics. It's a Marvel creation. DC and Marvel have their own unique superheroes and comic book worlds that are independent of each other.
I think the Doom Slayer would be more dominant. His suit gives him enhanced strength, speed, and durability. He has weapons that can level entire areas. While the Goblin Slayer is highly skilled at what he does, the Doom Slayer has fought on a much larger scale against far more dangerous foes. His presence alone would probably intimidate most of the goblins, and his ability to take on hordes of enemies without flinching makes him a very dominant force in any encounter.