I'm looking for a manga with a male protagonist who kicks ass. somewhat a loner.
so he has to be - smart
- strong
- a bit of a lone wolf
- not shy around girls (i mean: doesn't get a nosebleed when he sees panties or something)

Code Breaker
Samurai Deeper Kyo

Those fit perfectly...

Here are some that kind of fit, more or less:

Gantz
Hellsing
Seikon no Quasar
Shin Angyo Onshi
Ubel Blatt
Vampire Juujikai
Zero

Tree + Taco = Tree taco.

Until Death Do Us Part

[img]http://lh6.ggpht.com/Nabith/SH6-3kv9ZsI/AAAAAAAAAqQ/rAYBC9mbDcE/s400/darth_pika_avatar.png[/img]
FEAR THE FORCE LIGHTNING BROTHA

Übel Blatt Kinda works, although he is not an extreme loner and ends up being followed around by a bunch of people.

ChunChu fits pretty perfectly

Onikirimaru is good for this to, but the releases are a bit slow.

I highly recommend these series, I like them very much 😀

Haha...I thought Gintama when I read your post. XD

♪MONSTARR~ will eat all your cookies and steal your bishies~♪ Φ_Φ

thanks every one, will read some of those. there are a couple i haven't read yet.

Berserk
Threads of time
Id main guy is strong but travels with companions.
Red eyes
Shigurui kinda, the story follows 2 "heroes"
Superior maybe, also a group of companions
Vinland Saga
Zetman
Blame! no romance I think, read it a long time ago

Hope some of them will be to your liking.

"But why?"
"Because I can."

"OMFG, DON'T STAND IN THE FIRE!!!"

Death note

Not really strong Physically, but fits everything otherwise.

Does the walker choose the path, or the path the walker?