Lets look at this from what I've actually read...
Shaman King: Yoh Asakura
Pros: Has a big ass sword, has a samurai ghost partner and assorted other buddies
Cons: Little kid, Dies a bunch...
Parasyte: Shinichi Izumi & Migi
Pros: Awesome Parasitic hand
Cons:
FullMetal Alchemist: Ed & Al
Ed pro: Bad ass alchemist with metal body parts
Al pro: Bad ass suit of armor
Ed con: Short
Al con: No body :C
Kick ass: Dave Lizewski
Pros:... Is persistent?
Cons: Gets hurt alot...
Grandville: LeBrock
Pro's: is a badger and goes all Quentin Tarantino on people
Cons: Is a badger
Watchmen: Second lot of minutemen
Pros: Persistent and well trained and stuff. also one is radioactive and ****
Cons: banhammered, Mentally unstable
V For Vendetta: V
Pros: Awesome costume, Awesome lines
Cons: Mentally unstable
Black Lagoon: Revy
Pros: Crazy gunbitch, BOOBS!
cons: Is a girl
Bleach: Ichigo
Pros: Awesome sword and ghistly skillz
Cons: Dies alot... gets injured alot when dead.
Scott Pilgrim: Scott Pilgrim...
Pros: "Best fighter in school", In a band
Cons: If his live had a face it would be punchable, gets attacked at inconvient times.
Nausicaa: Nausicaa
Pros: persistant, caring, good at what she does
Cons: is a girl as well...
DOGS: Bullets and Carnage: Heine, Badou, Mihai, Naoto
Heine
Pros: Good with guns, Kerberos
Cons: Bat **** insane.
Badou
Pros: Bad ass when nicotine depraved
Cons: Chainsmoker
Mihai
Pros: Bad ass assassin
Cons: Old and has a bad tendency to kick people in the face.
Naoto
Pros: Good with a Katana
Cons: Girl
Biomega: Zoichi Kanoe & Fuyu
Pros: Bike, Coilgun
Cons: Zombie world. No idea what the **** is going on it atm
DeathNote: Light/L
Light Pros: Ambitious, Clever.
Light Cons: not really my ideals
L Pros: Genius, Made of win
L Cons: Reclusive
20th Centry Boys: Kenji Eno
Pros: Everyman
Cons: Made the bad **** when he was a kid
Conclusion
Still no ****ing clue....
Also, Beast and Gambit are win.