Background or empty space structure space surrounding shapes and forms in a art work is

Space/shape relationships can create illusions of depth or of foreground and background. In this relationship shape is known as figure, enclosed space, or positive space while space is called ground, background, or negative space. Empty space is also called open, unbroken, plain, or blank while filled space is closed

it would usually depend on the genre that they would provide

1.cosplay today

2.supernova

3.club karma

4.vortex

5.nightshade

6.utopia