By Staff Writer (media@latinospost.com) | First Posted: Sep 24, 2015 10:58 PM EDT

These may be the biggest keywords of the "Big Hero 6" sequel: Tadashi, Marvel, and Sunfire.

According to the latest buzz, Hiro's brother Tadashi may have survived the fire that engulfed a university building, where he attempted to rescue Professor Callaghan. He will reportedly "come back as Sunfire, one of the original characters included in 'Big Hero 6,' whose power is to transform heat into plasma," according to Vine Report.

Further, Tadashi's new identity will reportedly have him on the opposing end as a villain.

"Tadashi's body was never recovered during the incident and if 'Big Hero 6' fans could remember, Baymax kept on repeating the phrase, 'Tadashi's here.'" Movie News Guide recounted. "Tadashi will allegedly transform into Sunfire, who is also known as the Uncanny Avenger. Tadashi has lost all of his human memories and will fight against Hiro, Baymax, and the rest of the team."

If this bit of news is true, such a twist could prove to be a tragic one for Hiro, who battled with a villainous Professor Callaghan in the original flick. He had regarded the robotics program head with much respect and admiration before things took an awful turn. And now, it appears it's the whole cycle all over again with his own brother in part 2.

The connection to Marvel came about in the wake of a telling scene in "Avengers: Age of Ultron," as noticed by eagle-eyed Reddit user Kalean.

"During the time when Tony Stark chose a new A.I. for his armor, it was reportedly noticeable that one of the indicated was labelled 'Tadashi'," Venture Captial Post noted.

"Although the alleged Easter egg has not been confirmed yet, it is worth noting that the story of 'Big Hero 6' originally came from Marvel comics," the site went on to point out.

With that considered, the film always had a Marvel connection. However, it is not clear whether we'll be seeing anyone from "Big Hero 6" appear in an 'Avengers' movie.

The sequel was pretty much confirmed after Stan Lee mentioned in an interview with the Toronto Sun that the animated flick is among the movies in Marvel's slate of future flicks.

"After 'Ant-Man,' we're going to start playing around with Doctor Strange, the Black Panther, the Inhumans, and then we have to come back for 'Guardians of the Galaxy 2,' 'Big Hero 6,' the 'Avengers,' 'Captain America," Lee said.

Right now, there's no official word on when the sequel will be released or what its plot will be like.

In the meantime, check out this alternative ending from HISHE:

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