Fire Rocker Pirates

Fire Rocker Pirates (火災ロッカー海賊 Kasai rokkā kaizoku): Are an extremely powerful pirate crew feared across the world as one of the most notorious pirates to have ever sailed the sea. They rule in the second half of the Grand Line the New World led by their Captain Tiger D. Korag one of the four Yonko.

Jolly Roger
The crews Jolly Roger is a cartoon-like depiction of a flaming skull with two fire marks on both sides of it instead of the usual cross bones. The skull has no bottom jaw and has a triangular nose and wears visor glasses over its eyes. In addition to being on their flag, the jolly roger has also been shown on the sails of the ship as well