We start with this very riffy, rather solid metallic number that would be far from fitting on say a Jag Panzer record. It's current WWE grappler Evan Borne (who I seem to always mix up with Maniac Matt Borne who was the original Doink the Clown, however they're not related).
This concept was used in Japan but in an even more wilder and interesting way. Would would've thought that the insanely incredible duo of Stan "The Lariet" Hansen and Bruiser Brody would work with John Barry meets Issac Hayes workout of below? (Yes, I KNOW these are 2 covers of Fred Zep).
The "1997 NWO Wolfpack Sting meets 1985 Road Warriors (and a wee bit of Great Muta's) look from a grappler just called Hate (no relation to KPFA DJ Mr. Hate or the Polish Death Metal band) somehows mushes up mid-paced techno, electro-funk and some kinda Joe Satriani-ish shed guitar and somehow manages to make it work.
Back to Heavy Metal/Hard Rock, Billy Ken Kid's theme sounds really close to an instrumental that easily would've found it's way on a Dokken album or B-side. I mean this with respect as I friggin' like them for the most part and George Lynch's playing is actually quite good (albeit not someone I listen to a great deal these days).
If you'd like some cheese then check out Masahiro Chono's New Japan Pro Wrestling (NJPW) theme totally sounds like anything from Rhapsody of Fire (or really 99.9% of from their goofy label Limb Music).