The most badass...

Badass Names
Nosferatu Zodd - Ancient, exotic and mystical sounding.

Bartholomew Kuma

Integra Hellsing - Or, Sir Integral Fairbrook Wingates Hellsing

Solf J Kimblee - Red Lotus, Crimson Alchemist, badass titles as well.

Digimortal - I think the Assassin was referred to as that in the end, if so then it definitely qualifies.

Killy - After all, you can't spell Killy without kill.


Badass Anime Scene
This one I just recently came across, not the most badass, still I thought I'd better post it while I remembered.

http://www.youtube.com/watch?v=q6a9RV1OZm8

Most badass Manga: Berserk

Most badass Anime Character: Yusuke Urameshi from Yu Yu Hakusho

Most badass Manga Character: Kenshiro from Fist of North Star

Most badass Anime: Yu Yu Hakusho

Guts is definitely the most badass character ever :zomg

Kenji from 'Eden: It's An Endless World!'. He is like if Gutts was from the future of our real world.

Spoiler show

He even has a mechanical hand, was raped as a child and has a loli partner, just like Gutts :o

Sesshoumaru (Inuyasha) is a pretty badass character. Sometimes I don't think he even needs a sword; his only weapon could be his willpower and he can manage to defeat an enemy and then some.

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I mean he surpassed his father, and his father is pretty much the definition of badass.