This is based on the ad campaign & packaging for the Batman: Arkham City video game, as are all the figures below.

It's a 10-inch limited edition figure sculpted by Dave Cortes.

The monochromatic styling kinda makes him look like a zombie though, at least to me.

Batman's available at Amazon (US | CA | UK | DE | FR)

Harley Quinn is sculpted by Jack Mathews, hand-painted on cold-cast porcelain

She's available at Amazon (US | CA | UK | DE | FR | IT)

Nightwing is sculpted by Amos Hemsley

He's available at Amazon (US | CA | UK | DE | FR | ES)

Joker is sculpted by Dave Cortes. This limited colour one looks better than Batman.

He's available at Amazon (US | CA | UK | DE | FR | IT | ES)

Nice design for the Riddler. Sculpted by Phil Ramirez.

He's available at Amazon (US)

Classic villain Solomon Grundy.

13-inch high figure with removable heart and chest.

He is available at Amazon (US | CA | UK | DE | FR | IT | ES | JP)