Who are the Mian characters in crackback?

There seems to be a misunderstanding. "Crackback" is not a known term or concept within any established fictional universe or media. It's possible you might be referring to a specific game, book, or show with this name, but without further context, it's impossible to know who the "Mian characters" are.

Please provide more information about:

* The context of "Crackback": Is it a game, book, movie, TV show, or something else?

* What makes these characters "Mian": Are they from a specific region, culture, or have a particular characteristic that identifies them as "Mian"?

With more details, I can help you identify the characters you're looking for.