The latest Weekly Jump (via Ryokutya2089) has confirmed more playable characters for One Piece: Pirate Warriors 4.
Both Bartolomeo and Cavendish are playable characters in the upcoming sequel.
While Bartolomeo can use his “Barrier” for guarding and charge attacks, he can also use the Bari Bari no Pistol attack. Cavendish can also change into his alter ego Hakuba.
One Piece: Pirate Warriors 4 is launching for Windows PC, PlayStation 4, Xbox One, and Switch sometime in 2020.