This would mark the live-action debut for Krang in the second installment of the movie franchise, reported Ace Showbiz.
It's reported that the Krang's scene was filmed last week with some extras spotted on the set.
It seems like Krang will enter the Earth via an extra-dimensional portal. The absence of something or someone looking like Krang on set started a speculation that Krang would be presented via computer generated imaging.
On the animated "TMNT" TV series, Krang is a warlord from another dimension called Dimension X. He came to Earth where he met Shredder who provided a robotic body for him in exchange for Krang's high-tech base.
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The film will bring back Will Arnett as Vernon Fenwick, William Fichtner as Eric Sacks and Megan Fox as April O'Neil.
Michael Bay returns as a producer while Dave Green ("Earth to Echo") is attached to direct the second chapter.
Josh Applebaum and Andre Nemec from the first film also return to write the script.
The second installment of the film franchise is set fot a US release on June 3, 2016.