Because you like Sasuke Uchiha in Naruto
An infamous vampire, Alucard is a one-man killing machine with a philosophical side. See them in Hellsing.
Nozomu's name translates to despair, which is fitting for him. See them in Sayonara, Zetsubo Sensei.
With the loyalty and pluckiness of a puppy, Nana Komatsu is a hopeless romantic. See them in Nana.
Other people's opinions have never mattered much to Haruka Nanase, and they aren't going to start to do so now. See them in Free! Iwatobi Swim Club.
Mikasa Ackerman is a near-perfect soldier who won't break her stone-faced expression whether she's killing foes or protecting loved ones. See them in Attack on Titan.
Those who stand against this singular super ninja are doomed to fail. See them in Ninja Gaiden.
Eren Jaeger will erase the Titans from this world until not a single one remains. See them in Attack on Titan.
Light Yagami has a plan to make a better world, and morals won't stop him. See them in Death Note.
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!!.
Ciel Phantomhive is a haughty teenage nobleman who doesn't suffer fools gladly. See them in Black Butler.
The last war left his economy devastated, and now Germany is engaged in another war and stuck with two barely trained allies for help. See them in Axis Powers Hetalia.
With his perfectly combed hair and flashy military outfits, France can charm the pants off of anyone—well except his fellow nations, it seems. See them in Axis Powers Hetalia.