Two faces, 
Belly, 
Disfigured, 
Deformed, 
Ugly, 
Duplicate, 
Mutation, 
Mutated, 
Mutilated, 
Mangled, 

Bad anatomy, 
Long body, 
Extra limb, 
Missing limb, 
Floating limbs, 
Disconnected limbs, 
Poorly drawn hands, 
Poorly drawn feet, 
Poorly drawn face, 
Malformed hands, 

Grain, 
Low-res, 
Tiling, 
Out of frame., ugly, deformed, noisy, blurry, distorted, grainy