User blog comment:Jamie/Episode 7 - Amazing Spider-Man 2/@comment-1895174-20140520222350/@comment-1895174-20140523003712

That is obviously Chamaleon's mask in the bonus scene.

But, for the sake of argument, let's say it's not Chameleon. I've seen people saying it's Mysterio. We haven't seen Mysterio, either. Maybe it's supposed to represent the Lizard (the mask was kind of scaly)? Or maybe Electro gets a mask? That's still half of the Six being characters we haven't seen before.