Well, I've been a big fan of the following anime and manga characters for many, many years:

Griffith - BERSERK
Nephrite & Naru - SAILOR MOON
Oberstein - LEGEND OF THE GALACTIC HEROES
Gilbert - THE GREAT ADVENTURE OF ROBIN HOOD
Haman Karn - MOBILE SUIT ZETA GUNDAM,  MOBILE SUIT GUNDAM 0083, MOBILE SUIT GUNDAM ZZ
Nobutsuna Naoe & Takaya Ohgi - MIRAGE OF BLAZE
Chloe - NOIR
Iason & Riki - AI NO KUSABI
D-Boy - TEKKAMAN BLADE
Anavel Gato - MOBILE SUIT GUNDAM 0083
Yoko - THE TWELVE KINGDOMS
Tatsuhiro Sato & Misaki Nakahara - WELCOME TO THE N.H.K.
Mamina, Limone, Dominura - SIMOUN
Reki & Rakka - HAIBANE RENMEI
Kyousuke Iwaki & Youji Katou - EMBRACING LOVE
Utena Tenjou & Anthy Himemiya - REVOLUTIONARY GIRL UTENA
Jade & Platina - APOCRIPHA/0
Rai - LAMENTO
...