They look like something I made in Spore.
The only way to make this worse is to give them human feet.
Looks like one of the creatures in Francis Bacon's tryptich "Three Studies For Figures At The Base Of A Crucifixion".
I found this documentary on him interesting: https://www.youtube.com/watch?v=MgrO5za0lSY
The one with the plus at the bottom is female, the one with the arrow at an upwards angle is male.