Emblem of danger

Sinister skull

Human skull

Eerie skull

Symbol of danger

Warning sign

Cryptic skull

Bone structure

White skull

Pirate flag

Pirate skull

Crossbones symbol

Pirate symbol

Jolly roger

Fearsome skull

Crossbones emblem

Pirate sign

Ominous emblem

Gothic art

Dark imagery

Ominous presence

Red background

Skeleton head

Heart of darkness

Red skull

Kind of imagery