Any REALLY badass/kicking ass hero??

Hey, I know that there're many similar topics here but this one will be really different so I think it deserves its place as separated thread. Well, after watching a few series with so said "powerfull" main characters (like bleach, darker than black, trinity blood etc.) I still feel very disappointed. I mean all of them are theoretically powerfull, yeah, yeah but as I see it - they're mostly childish, psychically unstable, in depression, without control, they like to pitty themselves or they just do not have any, any, any style at all. They all have got such a great potential but it's totally wasted... It makes me frustrated. That's why I'm searching for some good suggestions of the anime series with REALLY badass main character. And what I perceive enough badass?? For me it's something like Galen Marek from Star Wars the Force Unleashed game or when I think about anime... Surely Dante from Devil May Cry - with no problems, full of self esteem and power, full of style and distance to everything, amazing warrior and just a good man, never gets really hit or when it happens it just makes him stronger (let's face that being pierced by his own sword/crucified isn't anything horrible for him - it happens in every game etc, he's used to it :-D). The same with Alucard from Helsing. Both very similar characters for me. Or even better would be the ice guy from darker than black - November 11/Jack Simon. He's powerfull, smart, he just has a lot of style. So to put it clearly - I'm not looking for typical scenario when the good guy has to suffer, loose, get beaten and surprisingly win the fight by extra power of good boost of hist mind. I'm not looking for heroes who get beaten even once - I need some animes with more Steven Seagal style. I mean the Seagal's style where from the first minute of 1st episode to the last final fight with most powerfull enemy, the main hero get's barelly scratched and goes through everything like butter, he's not psychically unstable, he's not emo, he could of course search for some redemption etc. but more like Galen Marek from SW:TFU. I'd be very glad if you help! Thanks in advance!

Any REALLY badass/kicking ass hero??