As the cast has grown, and the crew is often split into teams, this is to help anyone who forgets how a certain character looks. Nearly all characters are from the anime or movies, and if I ever get into the top 5 for most read One Piece fanfics I'll commission fan art for the OC's.

Main Character:

William D. Ox. - Looks inspired by Clint Walker, 9' tall, auburn mixed in his otherwise dark brown hair and blue eyes.

Secondary Protagonists:

Ranse McGrew - Looks inspired by Burt Lancaster, 6'10". 

Fia Cannone - Mid-length sandy brown hair, and a permanent tan. 5'8" with a pretty oval face, looks more lovely than 'beautiful'. This character wasn't based off an actress.

Sasha Zima - Looks inspired by Uma Thurman in Kill Bill. 6'2". Longer hair than the actress, with more One Piece female proportions... plus she wouldn't be caught dead wielding a katana, her weapon is a longsword.

Riccio Occhiali - Curly brown hair, thin body type, wears glasses, and has a mustache/goatee that doesn't connect . Not based of any actor.

Supporting Cast: (Marines who follow Bill)

Nelson (he's lost weight...) - Profession: Commander/Strategist. Tertiary combatant.

Pearson (Completely based on George McFly from Back to the Future, except more muscular and better able to hide his cowardliness...) - Profession: Primary Combatant, Lieutenant.

Miyagi - Profession:Doctor, Secondary Combatant.

Borodo - Profession: Navigator/Helmsmen/Former Thief, Secondary Combatant.

Bascud - Profession: Intelligence Chief/Former Bounty Hunter, Primary Combatant.

Willy - Profession: Captain, Primary Combatant.

Danny/Denny/Donny - Profession: Would-be Trio-Co Captains, Secondary/Tertiary Combatants.

Henzo - Profession: Inventor/Mechanical Scientist. Not a combatant.

Masterson (with daughter, Carol) - Profession: Marine Instructor, Sharpshooter, Mostly doesn't leave New Haven but is a Primary Combatant.

Jill - Profession: Intelligence Officer, Tertiary Combatant.

Musatobi - Profession: Captain, Flying Sharpshooter, Primary Combatant.

Next Generation: (Former OR current Chore Boys under Bill - by the newer chapters most are older than shown in these pictures)

Yoko - Profession: Captain, Medic, Primary Fighter. Ate the Mythical Zoan Monkey Monkey Fruit, Model: Sun Wukong.

Akisu - Profession: Inventor/Mechanic. Secondary Fighter.

Rapanui Pasqua (Primary Fighter, top 3 strongest of the younger generation)

Adelle Bascud - Profession: Doctor, Secondary Fighter. Ate the Weasel Weasel Fruit, Model: Honey Badger.

Roule Render - Profession: Map Maker/Navigator, Secondary/Tertiary Combatant.

Carrot (she's initially younger than shown in this photo) - Profession: Special Operator, Primary Combatant.

Mascot/Pets:

Boss

UberNuber

Due to that being a lot of characters, they're almost always separated into groups where the team away from Bill acts 95% "off camera".

The groups can change but they're always headed by either Ranse/Fia or Sasha/Ricky when Bill's not there.

Also, the Chore Boy's are mostly there for realism, but as time passes you can expect that they'll take on larger and larger roles until they're basically a 3rd group.