i want to be ai,she's smart at science(being the developer of the APTX 4869)
and kir as well because she is acting as a spy...
(i always wanted to be the spy who can help shinichi bring him back to his original form...)
Gin, I guess,because i am looking at him as the face of the BO...
i was going to say anokata but since nobody knows who he is yet and what are his motives, he can't be the greatest criminal yet...