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Tai lee only bested one of these people in a fight. Tai lee getting clapped with a lightning bolt to her tight ass ponytail 
. My money on Toph and I'll explain why 
https://twitter.com/KingBobbyDeal/status/1246661308793135104
. My money on Toph and I'll explain why https://twitter.com/KingBobbyDeal/status/1246661308793135104
If we are going by the end of book 3 ATLA (with azula not being mentally unstable) and that they're all willing and able to kill, Toph would win. Tai lee is only able to fight close combat, every other girl is skilled in long range and would keep their distance.
Okay, yeah Katara might have bloodbending, but she's only able to use that technique on a full moon and she's the only one have been defeated by tai lee in hand-to-hand . She also got clapped by Toph when they were training Aang
. She also got clapped by Toph when they were training Aang
Azula has mastery over fire, lightning, and is skilled at close combat, she's also fast thinking, and is a major attribute fighting these people.
Toph has the clear advantage on surface, as she has mastery over earth, sand and metal. She's also able to feel vibrations through the earth no matter how faint it is. So I think she would be able to block/counter everything thats thrown her way.
Azula would be the only person Toph would have a challenge defeating. But honestly, I do think Toph would win.
