HELLOOO i'm looking for some action/fantasy/adventure manga with maybe some dark overtones...

Tokyo Ghoul http://www.mangago.me/read-manga/tokyo_ghoul/tr/123538/page/ is a personal favorite and it definately has its dark moments.

I just read Suicide Island http://www.mangago.me/read-manga/suicide_island/mr/suicide-island/1/ and its really good, but it isn't finished and it has some romance

Didn't actually read the manga, but Parasite the anime is awesome. http://www.mangago.me/read-manga/parasite/ot/view/4396/parasite/vol-01

"Until Death Do Us Part" ~ Badass Highly trained Blind swordsman protecting a girl who can see future. The action scenes are mind blowing.

"xxxHolic" ~ Starts with very innocent high school puppy love, rivalry & friendship but goes into a deeper darker mystery driven plot.

"Gunslinger Girl" ~ Little girls waving their guns with innocent face. Their body's are modified to turn them into brainwashed cyborgs. Although the art is a bit old, I love the action scenes here.

"Hakkenden" ~ Well...if don't mind a lil bit of bromance, you can try this. The updates are bit slow though. So avoid this one if you don't like waiting too long.

http://www.mangago.me/read-manga/berserk/
http://www.mangago.me/read-manga/dorohedoro/
http://www.mangago.me/read-manga/claymore/
http://www.mangago.me/read-manga/oldman/
http://www.mangago.me/read-manga/hunter_x_hunter/
http://www.mangago.me/read-manga/fullmetal_alchemist/
http://www.mangago.me/read-manga/drifters/

I've read tokyo ghoul but I'll definitely give the other two a shot! TYSM!!

SWEET these all sound really great thank you!!

berserk and fma are some of my favessss this looks like a great list THANK YOU!!