This is the man British media are calling "the new Jihadi John." It's believed his identity is Siddhartha Dhar, also known as Abu Rumaysah.
Turns out he's a little more prolific than his predecessor.
"I think any practicing Muslim that hears that the caliphate has been implemented and the laws of the Quran and Sunnah are being established, they would flock to that place," Dhar said on a BBC program.
So ... who is he?
According to the BBC, Dhar grew up in a Hindu family in the U.K. and later converted to Islam.
After ISIS announced its caliphate, he appeared on numerous broadcasts defending the terror group.
"I think, look, the reality is, the caliphate exists, and many Muslims — not just myself — want to migrate there and live there peacefully," Dhar said on an Al Jazeera program.
He then fled to Syria with his wife and kids in 2014 after being charged with encouraging terrorism.
Dhar's sister told the BBC she wasn't sure if it was him in the new ISIS video, though she said the voice sounded like his at first.
This video includes music from Chris Zabriskie / CC BY 3.0.
