Post anime characters with red hair

Renji Abarai - Bleach

ERZA SCARLET AND ERZA KNIGHTWALKER!!!!!!

Kushina Uzumaki

Shanks (One Piece)

Eiji Kikumaru and Bunta Marui (Prince of Tennis)~

Easy one:Lady Red & Grell(Black Butler) they kinda make a good couple

Mikoto Suoh from K.

Izumi Akazawa from Another (left) and Rias Gremory from Highschool DxD (right).
Some other characters with red hair:
Ayako (Ghost Hunt), Kushina, Nagato and Karen (Naruto), Shanks (One Piece), Lavi (D.Gray-man), Ringo (Air Gear), Kallen (Code Geass), Shura (Ao no Exorcist), Otoya (Uta no Prince sama), Shana (Shakugan no Shana), Ayano (Kaze No Stigma), Shuda (Rave Master), Kagura (Gintama), Renji Abarai (Bleach), Etna (Disgaea), Rayne (    
Neo Angelique Abyss), Miss Goldenweek (One Piece), Death Scythe (Soul Eater) and Yoko (Gurren Lagann).

Aoko Aozaki from Tsukihime.

Ittoki from Uta-prince sama!! :D

Kyoko Sakura from Puella Magi Madoka Magica has red hair.

Kirche from Zero no Tsukaima

Haruka and Tomo from Uta no Prince-sama.

Bishop Castor from 07 Ghost <3

Yuuki :)

Shoichi Irie from Reborn!

Gingka Hagane from Beyblade.

Akira Renbokoji from Kakumeiki Valvrave.