No way I could only have one...

Lina (Slayers)
Lafiel (C/BotS)
Lime (SMJ/J-X/JA)
Deedlit (RoLW)

Folken (Esca)
Gendo (NGE)
Spike (Bebop)
Vash (Trigun)
Saitou (Kenshin)

Motoko & Batou(GitS)
Souske & Kaname (FMP)
Ranma & Akane (R½)
Kiba & Cheza (WR)

I'd post more, but that about enough for now.