Blurry
Bad anatomy
Disfigured
Poorly drawn face
Mutation/mutated
Ugly
Poorly drawn hands
Fused fingers
Messy drawing
Broken legs
Censor bar/censored
Multiple breasts
Liquid body
Disappearing body parts (arms, thighs, legs)
Bad ears
Low resolution
Black and white filter
Colorless
Anatomical nonsense
Unnatural body proportions, blur haze