Because you like Oscar Jarjayes in Rose of Versailles

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.

The personification of America is all about superheroes, hamburgers, and spreading democracy and justice. See them in Axis Powers Hetalia.

When it comes to Haruko Haruhara, there's more to the pink-haired biker than meets the eye. See them in FLCL.

For Celty Sturluson, it's rather upsetting to be the only headless girl in a city filled with full-bodied humans. See them in Durarara!!.

Duck, girl, and legend: Ahiru's identities confuse even herself at times, and she often wonders which of them is truly her. See them in Princess Tutu.

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.

What Mako Mankanshoku lacks in common sense, she makes up for in sheer optimism and force of personality. See them in Kill la Kill.

Rue is an icy prima ballerina whose obsession with perfection obscures a hidden desire to be loved. See them in Princess Tutu.

Konata Izumi has a live-now, worry-later view of the world. See them in Lucky Star.

England may cultivate the image of a well-bred gentleman, but he has both the temper and mouth of a seasoned sailor. See them in Axis Powers Hetalia.

Given his ability to wrench street signs from the ground, Shizuo Heiwajima is a useful one to have in dangerous Ikekuburo. See them in Durarara!!.

A vampire hunter, Integra Hellsing doesn't tolerate failure, least of all her own. See them in Hellsing.