User blog comment:Kunoichi101/Chapter 964: A Time Traveling Kunoichi/@comment-1784001-20191129145137/@comment-122.55.30.25-20191202092157

most likely, whitebeard joined Rocks out of respect of their power. or may a davy back jones? remember that game Luffy had, wherein the looser will loose a member of their crew. in the Pirate world, you either join under a pirate out of respect or fear.