How Did Sonic Become Dark Sonic?

Skills, powers and abilities

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.

Why does Sonic go dark?

When Sonic first crashed into the Metarex's base, after seeing how many fake emeralds there were, he felt uneasy. It is this dark chaos energy that intensified Sonic's rage at seeing an unconscious Chris and a terrified Cosmo trapped, which in turn caused him to become Dark Sonic in his mid-transformation form.

When did Sonic turn into Dark Sonic?

Dark Super Sonic, also known as Dark Sonic, is the form that Sonic the Hedgehog takes in episode 67 of Sonic X.