Deathstroke is a killing machine that is essentially master of every form of physical combat, ranged combat and of stealth. He is a superhuman that will use whatever methods takes to terminate a target.

That being said, Green Goblin is a much stronger superhuman, has a more advanced arsenal, can fly and is very cunning. Yes, he has a double personality but that has never hampered him in combat. Any character that is able to ragdoll Peter Parker on various consistent occasions is going to be a threat.

I think Goblin wins with very high difficulty.

What about the other 4?

Don’t know Grey Fox or Reaper so I don’t have much say on that.

Ajax against Slade would end up the same way it ended with Deadpool. Deathstroke just has better superhuman traits (aside from the pain immunity) and better equipment. Same with Goblin.

Black Noir is strong, stealthy and efficient, but I don’t think he is creative or seasoned enough to beat a mercenary of Deathstroke’s caliber or a superhuman scientist like Goblin (who can also fly and has a number of tricky gadgets). That being said, if this was Noir from the comics, he curbstomps both.

Defeat of my favorite movie villains