User blog comment:Nkstjoa/Official Wiki Death Battle Wishlist/@comment-27822848-20140704205124

Some of mine:

Bowser (Mario Bros.) vs. King DeDeDe (Kirby)

Lloyd Irving (Tales of Symphonia) vs. Kirito (Sword Art Online)

Broly (Dragon Ball Z) vs. The Hulk (The Incredible Hulk)

...And that's about it.