It's amazing what you learn by manually browsing Youtube. I thought for the longest time these were all Kiss Parodies.

Video this is from. It's mostly a retrospective on the famicom game. (The final boss is Jesus)

Seikima-II are the F'ING BUSINESS. Don't even talk to me unless your band has at least 4 guitarists, and ALL of them get solos. Iron Maiden could never.

Oh wow, Gintama also referenced this, I had no idea

He also appears in the 1989 DJ Boy arcade game. Voiced by Wolfman Jack. I am not making this up.

His Excellency Demon Kakka is the ruler of this world. He conquered Earth in 1999 with the power of rock and is the Demon King of our planet. He's also a great sumo commentator.

I'm pretty sure that the one in hokuto no ken was voiced by Demon Kogure himself. It was the first heavy metal band to sell over 100.000 copies of an album and the first to reach No.1 on the Oricon chart in Japan. It was a movement!

Checknout the manga/anime Detroit Metal City.

I saw these guys live a while back at a convention, they're crazy good. It activated some insane frequency illusion neurons because ever since I started to recognize all the references to Kogure

learned about him from a lucky star ED since they both do covers of chijou no hoshi

Do you know what was this a reference to?