Niwa

"Poison Witch" Niwa is a pirate and one of three top officers of Don Giovanni. She is the leader of the "Strife Triplets". As with most agents of Giovanni, she possesses a bounty over 100 Million Beli. Niwa appears to lead the assault-related operations, as well as counterattacks against enemy pirates.

She is known as "Poison Witch", due to her attacks being based around plants and various poisons.She possesses a bounty of 310,000,000.