YouTube user Brian Castle has produced the first compelling evidence to back up claims of an in-store Gamestop video promoting Mortal Kombat X. The video has gained traction for its references to Mileena and Shang Tsung -- as yet unconfirmed fighters from the last game!

"There are also plenty of other characters with messy histories, like Kitana & Mileena, or Shang Tsung and... everyone!"

The clip contains no new footage, but alludes to storied rivalries between various characters, including recently confirmed return Kitana and Mileena, and the many foes who've crossed paths with Shang Tsung.

Beloved actor Cary-Hiroyuki Tagawa will depict the villainous sorcerer in the live-action webseries, confirming his return last week [full story]. This has been the closest to a confirmed return for Shang Tsung, with new information tying the series closer to Mortal Kombat X.

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Both Mileena & Shang Tsung appeared on Mortal Kombat Online's Top 10 MK2011 characters ready to continue, last May. Did we get it right? Register to speculate about the promo video on the Mortal Kombat X forum!