User blog comment:JKGame/Big My Little Rap Battle Update/@comment-34129479-20190408062722

Good luck with the new battles, dude! I look forward to 'em! :)

From those hints, my guesses would be;

2. A battle with Rick & Morty

3. Princess Celestia

8. Maud Pie vs Dwayne "The Rock" Johnson?

9. I'm guessing the male tsundere is Vegeta?

and 11. Bonnie Zacherle vs Ole Kirk Christiansen (I believe you mentioned this one is a previous update)

Also, is that cartoon movie villain royale still happening? I could help, if need be! :)