missing fingers, fused fingers, extra fingers, extra limbs, malformed limbs, 

fused limbs, 

fused fingers, unnatural hands, disfigured hands, mutated hands, bad hands, too many fingers,
long arms, fused limbs, 
cloned faces, duplicate faces, 
crooked face, cross eyes, 
bad anatomy, bad proportions, gross proportions,
distorted, incorrect, deformed, extra limbs, missing arms,
missing legs