Role Reversal: Who is who?

"Oh my! Would someone please be kind enough to unstrap me?" Mikey heard Zoe's body ask. He unhooked the restraints on his sister's body. "Thank you," she said. Mikey questioned, "I'm guessing that you're not actually Zoe." "No, I'm Karyn. Well, with Leonard's personality. Considering your outward appearance, you're are certainly not who you appear either. Whom might you be?" Mikey looked down to see two breasts, and realized whose body he had, "I'm Mikey," he said, "I have your body, don't I?"