Ok, so this could be pretty much one of two candidates: Im or rox pirates. Now going on just semantics, then it has to be rox pirates, since a legend is defined as a longstanding and widespread narrative about someone or something that can even surpass that person and/or thing’s actual existence. There is no narrative about im, to probably 99.9 percent of the world he is totally unknown. Whereas there are definitely legends and stories about the rox pirates as evidenced by VA’s discussion at mariejois. Still, the gorosei asking im who he wants killed definitely seems like it could be pretty huge