Sasaki Pirates

The Sasaki Pirates were a pirate crew originating from the Grand Line that was once captained by Sasaki before he joined the Beasts Pirates.

Crew Strength
Given that the crew originated from the Grand Line and was led by someone who became one of the top officers of the incredibly powerful Beasts Pirates, it's safe to assume that the crew in its entirety was quite strong in its own right.

History
In the past, the crew was founded by Sasaki, but at some point, he was recruited by Kaidou to join the Beasts Pirates. It's unknown what happened to the rest of his crew afterwards.