User blog comment:Drakan95/Epic Rap Battles: Cartoons vs History. News with Fred Flintstone/@comment-5393732-20150503050625

Marvin Martian vs Xenomorph

Nemo vs JAWS

Alvin amd the Chipmunks vs The Jackson 5 (groups of singing brothers)

Yogi Bear vs Freddy Fazbear (does that count? If not, Yogi vs Bear Grylls) and/or Winnie the Pooh vs Ted