Just in case anyone adds information on this monster, I found a video that'll help with that.
New Areas for Barufaruku
The page is locked, it has been spotted in the Volcano but someone else got the proof.
Also, as suggested by some trailers, it appears in the Frozen Seaway, https://youtu.be/UbsFEBWFdX4
Barufaruku in Tower 3
Nicknames, we should have some for this guy.
Black Hawk sounds cool. Any ideas?