heyy can anyone tell me an animê with the main character......

Here is a list of twin animê characters, I'm however not sure who of those are main characters.

link

Shaman King
The main character Yoh Asakura has a twin brother named Hao/Zeke Asakura

the main character of Trinity Blood is a twin
his name Abel Nightlord (white hair), his twin Cain Nightlord (blonde hair) except for the hair color they are identical in appearance :)

K-On! has a twin main character,Hirasawa Yui and Ui. Try watch it,it's a very great moe musical animê and it's even have it's segundo season and awards. Now the movie is coming \(^_^)/

The one with the hair untie is the oldest sister and the one with the ponytail is the younger sister,but the weird thing about them is the the little sister is mais look like the oldest sister cause she's mais responsible lol 0_0

Trigun's main character, Vash, has an evil twin, Knives.

Bonbori and Hozuki from Otome Youkai Zakuro(new show that came out this fall)

The show is not mainly about them but they are definatly main characters

Figure 17 has a twin animê character.

Kaoru and Hikaru from Ouran High School Host Club.

shion and mion from higurashi no naku koro ni

Kyoko and Ryoko from clannad

Fuka and Fumika both are twins and among one of the main characters in Negima!?

Jyu-oh-sei has twins but one of the twins dies in the first episode so.....
Ouran High School Host Club has hikaru and kaoru