Pewdiepie -- Don't Fear Me Making Cameo on 'Walking Dead' (VIDEO)

Pewdiepie and 'Walking Dead' ... the union of YouTube's biggest star and TV's biggest show -- the kind of thing that would blow MILLIONS of superfans' minds -- and we got Pewdiepie to weigh in on the rumor.

Ever since Pewdiepie touched down in L.A. two weeks ago, his fans have been dying to know why he's here. Keep in mind the guy posts tutorials on how to play the 'Walking Dead' video games ... which gets tens of millions of views.

Add to that a video he posted of his pants covered in blood -- and you start to understand why everyone thinks he's about to guest star on either "The Walking Dead" or "Fear the Walking Dead."

Well, here's his answer.