What character, hero or villain is at their best when they have it?
Not that they arent good without it, but when they do, they just have that extra edge to overcome.
Characters like Superman and Flash arent what i'm talking about. Aside from the "this is my city" factor, they're just as formidable where ever they are.
Spider-man's on the bubble. While he knows NYC best, any big city gives him what he needs to fight at his full potential.
Top of my head picks...
Batman. He knows every nook and cranny of Gotham, has the timing on everything from mass transit to when a red light is going to happen.
Knowing a place is fine, but it's not going to let, say, Bruce or Matt fight out of their weight class, so to speak. It's more like a tiebreaker against an evenly matched opponent. I don't really consider those to be big advantages. Nor Surfer in space.
A couple of those are decent picks, because they have extra defenses built into their home. Darkseid has a planet of minions to call to battle. Doom has...stuff. Man-Thing or Swamp Thing in the right settings are also good choices.
But the couple that come to mind with organic advantages are Hydro and Sandman.
Another gigantic one is Black Panther. Forget knowing the forests outside of Wakanda; the defenses he has at his command change him from a low meta to probably able to match a low herald.
I do disagree on Batman and Gotham though. He once successfully hid from Superman when they first met, causing Supes to believe he was a meta. Bats just knew Gotham that well.
This was pre-latest-boot, but i believe its something that hasnt changed.
I disagree on Surfer, too. In Space his speed and maneuverability are at their best.
Still, this is shy i wanted different takes on this idea...!
The Elementals in the Green/Red.
Hell Lords in their dimensions.
Batman, especially Damian, in Gotham.
BP in Wakanda
Namor in water
Uncle Sam in the US?