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I KNOW I MAY BE SCHIZOPHRENIC OR WEIRD BUT ANYWAY...

Jake from Jake and the Never Land pirates *He's so sexy <3*

Sasuke Uchiha from Naruto

Itachi Uchiha from Naruto

And lots more...

I am straight but I admit these characters = sexy

And I am not gay ;D

L from Death Note

Al from Fullmetal Alchemist

Kiba from Naruto

Reno from Final Fantasy

Goku and Vegeta from Dragon Ball Z

Lastely...

The Hitachiin twins from Ouran High School Host Club!

I see you said "cartoon characters" which is a wide range.... Most people have said anime characters, I believe this is due to them most likely being teens and anime (most of the time) has mature themes and jokes and is easier to relate to by said teens/young adults.

I have a list XD and first an anime with hot guys has to be Ouran High School Host Club

-hikaru or kaoru from Ouran High School Host Club

-Ikuto from Shugo Chara

-Suigetsu from Naruto Shippuden

-Inuyasha from Inuyasha

-Aang from Avatar the last airbender

and lastly Gaara from Naruto and Naruto Shippuden

Prince Zuko, from Avatar the Last Airbender. I would date the f*ck out of him.

Shin from nana and prince Zuko from avatar <3

Jonny Quest. The first time I saw him, I went head over heels. He's so cute!

http://classicjq.com/

Ryou Bakura from Yu-Gi-Oh

Tsubaki Kasugano from mirai Nikki!!!!!!!!!!!!

Akira from Ai Ore!! >w<

he's so cuuuuutttteeee!!!!! :D