Beasts Pirates
Kaido of the Beasts although renowned as the “Strongest Creature”, has fallen and been defeated multiple times in the past. However, he is still kicking and has never been able to stay down. This begs the question, what happened in the past once he was captured by the Marines.
Judging by chapter 989, one time in his past over 20 years ago Kaido was at Punk Hazard where he gained the Numbers and added them to his crew. However, I believe there is more.
Vegapunk was on that island long ago, however, I believe after Vegapunk’s research group was captured by the World Government, they were sent to Punk Hazard with a security detail to ensure that they do not escape the World Government.
While working here, Vegapunk and his team continued his research on lineage factors under the World Government’s order and supervision. This is when Kaido entered Punk Hazard as a prisoner of the World Government. Vegapunk was probably using these factors and Kaido in order to cause forced gigantification in order to create the Numbers.
Not only this, Vegapunk was able to study Kaido and clone his devil fruit into Momonosuke’s current devil fruit. All through the study of Lineage Factors.
Finally years later, Kaido was able to convince two individuals to assist him in planning an escape, Queen the Plague and King the Wildfire. They were able to get a message off to Kaido’s only known ally, Charlotte Linlin, Big Mom.
A battle broke out where King, Queen, Kaido fought off the World Government with the Big Mom Pirates. King burning his way through the island and Queen turning his enemies into Ice Onis with his plagues. Thus giving them the names King the Conflagration and Queen the Plague. In exchange for her help, Kaido now owed Big Mom a life long debt. And Kaido and them became the Beast Pirates and eventually came to Wano.
