mad max - Is Scrooloose from Beyond Thunderdome a stranded War Boy?

What canon information confirms or denies that Scrooloose from Mad Max: Beyond Thunderdome foreshadowed the War Boys featured in Fury Road?

Answer

Unlike many modern film franchises, which have recently been leaning towards strong continuity an even the concept of "shared universes", the Mad Max films have never been particularly bothered with continuity.

This is demonstrated in a number of the films before Mad Max: Fury Road, such as in Mad Max: The Road Warrior and Mad Max: Beyond Thunderdome, which each cast the same actor (Bruce Spence) in very similar roles (Gyrocopter pilots) but as different characters - a confusing moments when first watching Mad Max: Beyond Thunderdome, but one that ultimately doesn't matter to the events of the story.

Thanks to the format of Mad Max: The Road Warrior (which has a now adult Feral Kid telling the story of Max to his tribe) and the events of Mad Max: Beyond Thunderdome (which has the story being told by a group a kids that Max rescues), we can assume that Max's story is one told throughout the wasteland, with different embellishments depending on who tells it, possibly even multiple peoples efforts and achievements assigned to one man - a future legend or myth, if you will.

The point of all this is that the continuity of these films inherently doesn't matter. You can say that Scrooloose is a War Boy if you want, or that he grows up to be Nux or Immortan Joe or he is the last remaining member of their tribe - but you won't likely ever get a solid answer as the director himself, George Miller, simply isn't interested in the question of continuity.

From an interview with director George Miller himself;

Something I noticed not in the film but in the press reception to it was some confusion about how the overall continuity of the Mad Max films work. I've got my ideas about what's going on here, but can you clarify what you think the relationship between these stories is?

Well, they're not really connected in any very strict way. They're another episode in a saga of a character who is pretty archetypal: the wanderer in the wasteland, basically searching for meaning. This is someone we see in the classic westerns, in samurai stories. You can't really put a chronology [of the Mad Max films] together. They were never conceived that way. After I made the first one I had no intention to make a second, the second was ultimately an attempt to do the things I couldn't in the first one and so on. They were all standalone films in many, many ways.

Like fragments of a bigger folklore.

Precisely.

^{George Miller in an interview with with Den of Geek}