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

fused limbs, fused fingers,

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