It’s band members of Styx. I have no clue what styxhexenhammer is.
https://www.youtube.com/watch?v=ZXhuso4OTG4
styxhexenhammer is apparently short for the author of this thread's actual handle on Rumble, which is styxhexenhammer666.
He's a self avowed satanist. Those that post his videos try to hide this by listing his name as Styx on the thread.