The One Piece world is almost completely ocean. All travel is done by ships.
The Ice fruit has shown the ability to freeze massive portions of ocean for days and also the ability to completely impede travel.
Overall the fruit is by far the most useful for the World Government. Being able to...
I feel like 100% of fans agree that Luffy and Zoro are top 2.
But I’m curious as to who you guys think is the 3rd main character (or who has the next most plot relevance).
There are arguments for both. Nami being a “trigger” in the story. While Sanji having two dedicated arcs.