Jolly Roger

The Jolly Roger is the traditional flag of European and American pirates, envisioned today as a skull over crossed thigh bones on a black field. Various versions of the Jolly Roger existed over the course of the centuries, for example Calico Jack'c Jolly Roger replaced the thigh bones with swords (Cutlasses).

Oda himself provided some info on the Jolly Roger, including three possible thoerized origins that have come to be accepted by experts:


 * Some say it comes from the French term "Jolie Rogue" or "red Lovely" possibly referring to blood.
 * "Roger" may have come from the word "Rogue" meaning thief or villian.
 * It may have come from the term "Old Roger" a old fashioned name for the Devil.

The Jolly Roger is hughely reconigsed to mean "danger" worldwide. The skull and crossbones themselves are commonly used on to warn people about dangerous substances or places on signs and bottles.

One Piece
In One Piece, there are many Jolly Roger flags. However, raising the Jolly Roger is considered a huge crime by the Marines, and anyone seen doing so (may it be fun or for real) will be considered criminals. The designs of the Jolly Roger usually reflect the intereast or Captain of the crew. Other times it may be a personnel item they wear or the symbols behind them.


 * For a swordsman usually there are two swords crossed (such as the flags for Shanks and Zoro).
 * For cooks there is usually forks (such as those for Zeff and Sanji)
 * For baseball players there are two bats either side.
 * Buggy's flag features his red nose.
 * Shanks has 3 scars across his left eye on his Jolly Roger.
 * Luffy has his Straw Hat on his Jolly Roger.
 * Don Krieg had two hourglasses on his to give the signal "your time is up".

Jolly Roger's help pirates determine who belongs to whose crew. All those that sail under a Jolly Roger are suppose to show it respect for their choosen flag and honour it always. Once the flag is gone, the crew can no longer sail under the flag and therefore everything assoicated with it is gone. Luffy uses this in making his choice in the Davy Back Fight and takes their Jolly Roger for this reason.

Different crews react differently to these ideals. For example, Warpol did not see what was so important about the pirate flag in comparison to Luffy. Donquixote Doflamingo does not like the idea of anyone tarnishing his flags name and punished Bellamy for loosing under it.