SCP-021 is a long Sentient detailed dragon tattoo that moves around its host’s body inflicting a lot of pain to the host as it moves, SCP-021 is seen eating other tattoos on the hosts body but if no tattoos it eats pigments in the hosts skin, This can include melanin that case the subject to be suffering from vitiligo manly on arms legs & torso. SCP-021 is not harmful to the host and can only go to a different persons body if the host makes physical contact with the person and it works.