User blog comment:Drakan95/Piccolo vs Martian Manhunter. Epic Rap Battles: Cartoons vs History. Season 2/@comment-5101200-20180608135621

Wonder Woman vs Mulan

Tony Stark/Iron Man vs Lewis/Cornelius Robinson

Hawkeye (Marvel) vs Hawkeye (Fullmetal Alchemist)

Green Arrow vs Robin Hood

Black Widow vs Kim Possible

The next one is kind of a joke cause there's no real connection but at the same time I kinda wanna see it done just cause I don't recall any Green Lantern battles where more than one Green Lantern:

Hal Jordan & John Stewart vs Mermaid Man & Barnacle Boy