While I'm not really a fan of Mysterio's, I feel like Rey could turn heel, just like he was back in WCW along with Psicosis; Juventude Guerrera; Eddie Guerrero; etc... They were all a part of a heel stable. The problem is that the WWE has pushed Rey as a face since his debut. However Sin Cara is way over as a face in Mexico and with the WWE wanting to cement relations with Mexico, ( among other Countries ), don't expect them to cast Cara as heel. Rey, ( although recently returned ), is on his last leg before retirement. As such he is willing to work with Sin Cara and I for one am grateful for this as it can only lead to a better future for wrestling fans. Whether face or heel, I'll applaud Rey Mysterio for recognizing the need to help the younger stars get over and become established, legitimate superstars in their own right.