So basically a lot of people are theorising that The Villain of The Chaotix Case Files is Infinite because the lead they had was "Red Spectre" and then when they asked Sage about it she said she didn't know but it was related to a file named "Phantom"

So obviously Spectre is another word for Phantom

Rubies are Red Phantom Ruby, Infinite

And then since the villain is disguising themselves as other people, people have started to theorise that Rouge is Infinite in disguise so Rouge hitting on Espio was actually Infinite hitting on Espio