1. Guts – Berserk
His only goal in life is to hunt down Griffith to exact revenge. Guts doesn’t bother with help others and won’t hesitate to cut down anyone who stands in his way. Being a mercenary for most of his life has also left Guts with a cloudy moral code.
2. Sebastian Michaelis – Black Butler
Oh sure, Sebastian will become your bishounen butler as long as he can eat your soul in the end. He’ll do any dead you ask too, all without the hassle of pesky questions
3. Accelerator – A Certain Magical Index
Accelerator really loves to fight and has no qualms for causing immense damage. Originally a villain, Accelerator becomes an anti-hero in the Last Order Arc.