Kaido of the Hundred Hostages as he is known throughout the world. Sengoku when talking about his past in the Rocks emphasized that
Prior to heading to fight Linlin in Onigashima, this was what Kaido asked his subordinates
However, once he arrived there and saw that Linlin was missing her homies, he decided to act tough and free her, only to inform her later that he was keeping Prometheus captive as a hostage.
His hostage tactics seem to transfer to members of his crew. It is widely speculated that it was indeed Kaido's plan to take Law's crew hostage, and Hawkins just acted out the plan.
Kaido as a Hostage Specialist would therefore know about this type of tactics and teach Hawkins.
Oda even confirmed that Kaido took his son hostage
and that only now when he is rescued can Oda write the truth again.