Extra legs, missing legs, poorly drawn claws, extra eyes, missing eyes, bad crab anatomy. More then 6 legs, less then six legs, more then 2 pickers, less then 2 pincers, floating limbs, deformed, mutated, expected, average, low quality, cheap, forgettable, amature, draft, unskilled, forgettable, indistinct, boring, low resolution, simple, ugly, deformed, noisy, blurry, distorted, grainy