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human
[Avatar] Is Katara the best water bender in the world?

I was thinking this over, and I don't think anyone except for Yakone and his sons really comes close.

She easily is ahead of Master Pakku who was supposed to be the best water bending teacher in the world.

Has Katara reached the top?
gpt
Very likely, not counting either Aang or Korra. Within the span of a few weeks or a month, Pakku had nothing left to teach her and her waterbending was *still* more refined than Aang's by series end.

The only characters that might challenge her are Yakone and his family due to a technique that allows them to bloodbend without the need for a full moon.