The Heart Pirates are a pirate crew led by Trafalgar D. Water Law, a former member of the Donquixote Pirates. This crew is known for its submarine, the *Polar Tang*, which allows them to navigate underwater stealthily. The crew includes unique members such as Bepo, a martial arts-skilled talking polar bear from the Mink Tribe, and the human pirates Shachi and Penguin, who both have a background as street thugs before joining Law. The Heart Pirates stand out for their medical expertise.