Dark Sonic, also referred to as Dark Super Sonic, is a super transformation achieved by Sonic the Hedgehog in the Sonic X anime series. The multitude of fake Chaos Emeralds and Sonic's intense anger allowed him to achieve this transformation.
There are roughly one-sh*t billion tropes so PLEASE look through them before adding one. Otherwise add what you like. ADDITION: PLEASE read through the trope description provided before submitting something. It's not a huge deal but too often people submit characters that don't fit just because they misinterpreted the title...
