User blog comment:Venage237/Deku Link vs. Goron Link vs. Zora Link/@comment-5038193-20150828203218/@comment-3018330-20150828230309

There's apparently a rule that doesn't allow one to create Death Battles involving the same character but in different forms. Now there are a couple of exceptions, like those Link vs. Link Death Battles I've seen since they are different incarnations. But since my Death Battle involved the Link from Majora's Mask, where one of them is wearing the Deku Mask, one wearing the Goron Mask, and one wearing the Zora Mask, that Death Battle was going to be deleted due to that one rule.

It's pretty much like how you can't create a Death Battle with real people, which kinda sucks.