I have two favourite characters Momo he is really fun and Uncle Iroh he is so cool and always relaxed and busy drinking tea

My favorite characters are all quite powerful :
I like King Bumi because he's an old powerful crazy earthbending king (for all of that)
I like Avatar Kyoshi because of her perfect skills in earthbending and her look
I like Aang because he's a hundred twelve years old goofy kid who likes playing and also because he's awesome when he's in the Avatar State
I like Avatar Roku because he's (or was) the only Firebender who is known to not use his powerful skills to destroy everything or to control the world like the Fire Lord Ozai.
I like Azula because she's a prodigy even though she's only fifteen years old (and she's pretty too)

I'd have to say Iroh, Zuko, and Toph top my list. For Zuko I can combine what people have already said. Uncle Iroh, you just can't help love the wise old tea loving uncle who has his funny moments. And Toph, because despite being blind, she shows how she can overcome her disablity and be strong.

MY ALL TIME FAVORITE CHARACTER IS TOPH!!!!

Toph-Even though she barely appeared she's just so adorable! makes me wanna hug her, but she'll kill me..but
that's why I love her! She looks innocent or in her fathers case "Blind, and helpless" but she totally KICKS ASS!!! She does all the wicked moves I was like O.O COOL!! and Yeah..Toph..XD

Zuko-I dunno I guess I just like people with bad pasts...he's really cool, and even though he seems "Evil" he's a very nice person, if you saw his past anyway...

Uncle Iroh-He's really funny! If you asked him "Fight or Tea" he's choose Tea!!!

Aang-He's a really nice cheerful person, and he has the whole world on his shoulders..he's cool, but I REALLY hated when he yelled at Toph for "losing" Appa, it was clear she cared about Appa, but Aang was too blinded by anger and hurted her feelings! T_T

I would have to say that
Sokka =Because he is so determined and funny.
Anng= Because he just likes to have fun.
Zuko= because he is so cool he like is so determined to capture the fire nation then he just does what ever he can even if he cant to it.

Hello, I am new in the forum and good I like much so I made myself member
my favorite character is Katara because he is a very mature girl.
I also love Toph, because it is of a very cold character.
And no way of Zuko, me laugh bush when he/she despairs for their uncle's blame. And Iroh always maintains the calm! for that reason Iroh tamvbien is one of my favorite ones.
forgive if they don't understand my English well. It is that I speak Castilian. I`m sorry.

Zuko: You know why, but he is so cool, he tries to do his best, and you know the rest (hey it rhymed!)

Iroh: MY FAVE CHARACTER: he seems really lazy, though for fire nation he respects the other country's and learns from them, he also is totally badass when he needs to be.

I like
Sokka=funny and cool
Katara=so much hope and courage
Aang=funny laid back and likes to have fun
Boomi=asweet earthbender and i love his crazy way of thinking
Zuko=cool serious and determined
Iroh=lazy but sweet firebender and verry wise

My favourite character is Sokka. He's just so funny, brave, smart and he is NOT stupid (as some may claim).
After him I like Iroh (cause his proverb really are great and wise...well nearly all the time ;D)
And then I love all the rest of the characters. Except Yue... I don't know why but she bugged me. Maybe cause I'm a suki/sokka shiper... but she was so nice it really got on my nerves!

I have a few favorite characters, but my overall favorite is Toph. She's strong, determined, and she even makes me laugh. When the word 'warrior' or 'strong' is said around me, the first thing that comes into my mind is Toph. Toph is also intelligent, and unique. I think her vision is amazing, how she sees the world differently from everyone else, yet in a unique way of her own that works to her advantages. Yes, she does have some weaknesses, but that's part of what makes her the warrior and character that she is. And what stands out form the rest, Toph even makes me question the other characters in Avatar. I might even be looking back at some of the main characters trying to determine if they could match up to Toph. In my opinion and mind, Toph always comes out on top.