Malignant lesions of the skin are common. Patients who develop squamous cell carcinoma and malignant melanoma often have recognizable precursor conditions. A few skin lesions resemble malignancies. Lesions that are growing, spreading or pigmented, or those that occur on exposed areas of skin are of particular concern.
Powers and skills. Dark Sonic is a dark super transformation achieved by Sonic the Hedgehog in the anime series Sonic X. The multitude of fake Chaos Emeralds and Sonic's intense anger allowed him to achieve this transformation.
In Sonic Adventure 2, there's also the Hero Chaos Chao, also known as the Angel (Chaos) Chao, and Dark Chaos Chao, also known as the Devil (Chaos) Chao, along with the normal Neutral Chaos Chao, also known as the Light Chaos Chao (shaped like Chaos) from the original Sonic Adventure.