Because you like Celty Sturluson in Durarara!!

The witty Aku would be an ideal dinner guest, if he weren't a demon. See them in Samurai Jack.

Years of brutal winters, foreign invasions, and crippling loneliness have left Russia's mental state far from wholly intact. See them in Axis Powers Hetalia.

The vampire that killed Zero Kiryu's family also infected him, and he starts to crave blood, much to his horror. See them in Vampire Knight.

Years of being the less desirable Vargas sibling have given Romano quite an inferiority complex, as well as the temper to match. See them in Axis Powers Hetalia.

Oscar Jarjayes is a sword-swinging, fearless Commander of the Royal Guard who cross-dresses as a man. See them in Rose of Versailles.

A laid-back wanderer, Ginko has an empathetic, open-minded worldview. See them in Mushishi.

Underneath Fakir's sarcastic exterior is a loyal friend. But his loyalty borders on being possessive of his friends. See them in Princess Tutu.

Char is always thinking two or three steps ahead of the enemy. See them in Mobile Suit Gundam Series.

From his attire to his form while running, aesthetics rule Rei Ryugazaki's life. See them in Free! Iwatobi Swim Club.

Nozomu's name translates to despair, which is fitting for him. See them in Sayonara, Zetsubo Sensei.

Firo Prochainezo is swept up in a world of mysterious women, alchemists, and rumors of a wine that makes it drinkers immortal. See them in Baccano!.

While his twin tries to save lives, Millions Knives does the best to end them. See them in Trigun.