Medusa

appearance
she was alike from the legend in Athens Greece where she was really the professor who wanted the treasure of medusa all to himself so he would buy whatever he wanted.

season 3
she was really another fake but the curse looked real because the culprit had very powerful technology used for the legend as he also used a pair of

x-ray vision goggles to so-calledly be able to see underground at the dig to destroy her enemies.

but in reality it was professor von smith using special effects!