The Heart Pirates are an infamous and notable rookie pirate crew from the North Blue and introduced on Sabaody Archipelago around the time the Straw Hat Pirates arrived there two years ago.

Their captain, Trafalgar D. Water Law, is a member of the Worst Generation and a former Shichibukai.

They are currently in an alliance with the Straw Hat Pirates, Kozuki Family, and Mink Tribe with the goal of taking down Kaido of the Yonko.

Unlike many other pirates from the North Blue, the Heart Pirates do not use a skull and crossbones, but a smiley face instead.

The Heart Pirates' jolly roger has protrusions in six directions and is in fact pretty similar to that of the Donquixote Pirates, without the cancel sign over it.

The smiley is a reference to Donquixote Rosinante, who wanted to be remembered smiling, in contrast to his brother Donquixote Doflamingo's murderous manner and contrasting symbol.

The crew consists of twenty-one members, all but two of whom wear a pale-lilac boiler-suit apparel with the crew's Jolly Roger emblazoned on the left side of the chest, aside from their captain and Navigator.

When Jean Bart first joined the crew, he merely wore a black shirt after changing out of his slave's clothes, but after the time-skip, he is shown to have adopted the same outfit as the rest of the crew. Their uniform is notable for being similar to the ones worn by the World Noble's slaves who were working in Tequila Wolf, with the only notable differences are the color and the Heart Pirates' have their jolly roger on their suits.

They also have a single female crewmember. In the manga, a total of sixteen members, including Law, can be seen; however, the anime depicts the full number of twenty. The remaining four members are to be considered non-canon, especally since one of them is Pandaman.

Several unnamed crewmembers make multiple appearances, such as the one with a white mask or the one with braids; on the other hand, some have only made one background appearance.

It appears that Bepo, Shachi and Penguin are all proficient in martial arts, in which they all seem stylistically similar. Their captain is also the doctor on-board. :OPWS_MonkeyDLuffy: