Synth Sonic is the name given to the form Sonic the Hedgehog takes when under the curse of Dracula in Sonic and the Dark Blood, which is currently its only known appearance in.
Appearance[]
Synth Sonic is very similar to Sonic in appearance, but his body is completely covered in dark purple skin with a purple aura surrounding his body. His eyes is pure white.
Abilities[]
Dracula describes the state as similar to that of a true Vampire. This form allows Sonic to faze through thin walls, and able to briefly turn invisible. However, this state also comes with a cost, as Synth Sonic also increases its own power due to primal rage.