The Kyoshi novels have some good villains, Jianzhu is good in his psychological manipulation, I also think Yun is an interesting villain but I wish he was the main villain of the two books so we got to see more of him

Like everyone else I like Amon, Azula and Zaheer. But I also think long Feng is kinda interesting

For me the best villains are in avatar the last airbender and the most memorable and iconic one is azula

My reasons why she's the most ruthless villain

• She nearly killed Avatar Aang and thus almost ending the avatar cycle

• She took over the earth kingdom without an army

Best villains in the entire avatarverse are from avatar the last airbender

best Main villains In my opinion

• Princess Azula

• Firelord Ozai

• Long Feng

• Admiral Zhao

• Prince Zuko (book one water)

Best side villains In my opinion

• Hama

• Combustion man

• Mai

• Ty Lee

• Firelord Sozin

• Firelord Azulon

UnaVaatu. Just kidding. It's either Zaheer or Azula.

Favorites in the franchise

• Amon

• Zaheer

• Azula

• Tarrlok

• Ozai

Best in the franchise (from my highly analytical opinion)

• Ozai

• Tarrlok

• Azula

• Zaheer

• Amon

*this is based on relevance to the plot, depth, character, motivations, threat, intimidation and affect on the protagonist

(NGL I didn't even realize that I'd inverted the list until just after I wrote them. I just ranked them to who I thought was best and it turned out to be my favorites list inverted.)

Azula and Zaheer

Azula

Azula

The scariest villain is Zaheer but my favorite villain is Azula