Monster Pirates

The Monster Pirates are a pirate crew led by the former and single living member of the Nazareth Family, Maribel. All members of the crew are either cursed by the power of her devil fruit or were physically modified by Victor's hands, turning them into horrendous creatures in order to save their lifes.

Jolly Roger
The Monster's Jolly Roger has a green skull and no crossbones. Instead, it has six leg-like appendages coming from behind the skull and two round structures in the upper part of it.