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LayCool are a Type C example. The two of them are best friends with genuine affection for each other and are bubbly and friendly whenever they're on commentary. Then in the ring....they are devilish little villains who are out for themselves. Michelle and Layla even give off nice toothy smiles whenever they're insulting the other divas.
Melina's last heel turn implied she was a Type B as a face. The announcers have said "this is the real Melina, not the smiling happy diva we've seen in the past"
Eve Torres is a Type C. She would frequently wave like a Pageant Queen and give a gleaming vapid smile - right before she would brutalise other women in the ring.