Let's question how strong Bat Man would be if he was in the one piece verse and if we're being honest he'd be one of the strongest Haki users in the verse.
Firstly Haki is the outer representation of will power and Batman has a stronger will power than a good chunk of fiction, throwing hands, arguing and standing up to people who are literal gods among men.
Batman is a master of deduction and martial arts so not only will he go in with a pletheora of martial arts and experience he's skilled enough to learn any fighting style in the one piece verse
Six powers, Fishman karate, Okama kenpo, etc etc
Batman 100 has the will power, skill and experience to not only have haki but master it to insane levels
I believe Batman in the op verse would be a bonefied top tier especially if he meets vp and is able to recreate some of his gadgets
Batman would 100% be a the world's strongest Bounty hunter
He wouldn't be a pirate because for the most part pirates are evil and villainous and he'd quickly figure out about the corruption in the wg so he wouldn't follow them
Perhaps revolutionary army but given Batmans personality he fits more in the roll of Bounty hunter
Firstly Haki is the outer representation of will power and Batman has a stronger will power than a good chunk of fiction, throwing hands, arguing and standing up to people who are literal gods among men.
Batman is a master of deduction and martial arts so not only will he go in with a pletheora of martial arts and experience he's skilled enough to learn any fighting style in the one piece verse
Six powers, Fishman karate, Okama kenpo, etc etc
Batman 100 has the will power, skill and experience to not only have haki but master it to insane levels
I believe Batman in the op verse would be a bonefied top tier especially if he meets vp and is able to recreate some of his gadgets
Batman would 100% be a the world's strongest Bounty hunter
He wouldn't be a pirate because for the most part pirates are evil and villainous and he'd quickly figure out about the corruption in the wg so he wouldn't follow them
Perhaps revolutionary army but given Batmans personality he fits more in the roll of Bounty hunter