User blog comment:Drakan95/Dr. Frankenstein vs Dr. Jumba. Epic Rap Battles: Cartoons vs History/@comment-25519319-20150619132055/@comment-5101200-20150619141221

Cow & Chicken vs Ronald McDonald & Colonel Sanders (bpf)

The only opponent I can think of for Krueger is Pitch Black from Rise of the Guardians but I don't know if that counts as cartoon.

I got nothing for Scorpion