All I know about it, though, is this one totally gonzo online review. Has anyone here actually seen it?
http://www.teleport-city.com/movies/reviews/horror/wild_zero.html Underground film and music collide in Wild Zero as they only could in Japan. The movie stars, among others, now legendary lo-fi garage punk/rockabilly icons Guitar Wolf as themselves in roles that are not completely unlike what we saw KISS doing in KISS Meets the Phantom. The big difference is that while KISS seemed completely goofy in that movie, Guitar Wolf can't help but seem like the baddest ass bunch of guys on the planet. Rockabilly pompadours, black leather jackets, and "don't give a fuck" attitudes go a long way, and this movie uses them all perfectly.
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Along the way, Guitar Wolf picks up the boyfriend and girlfriend being chased by zombies. They arrive at the gas station and find it empty -- almost. Guitar Wolf bends down and finds Ace's comb. He shakes his head, realizing that Ace needs their help more than ever since he has such an uncool comb. No sooner does he make this decision than the crazy arms dealing woman pulls up in her armored vehicle with dozens upon dozens of flesh-hungry zombies hot on her trail. Guitar Wolf -- who, by the way, still has his guitar slung over his shoulder -- steps outside and dispatches the zombies in the best way possible: through the use of glowing magic guitar picks that whiz through the air like ninja shurikens and cause zombie heads to start exploding left and right! Oh yes, you heard me correctly. Don't worry though, because it gets even better!
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As if enough wasn't going on, the club owner -- completely oblivious to the fact that zombies are everywhere and the sky is filled with UFOs -- finally corners Guitar Wolf for their big showdown, which includes grenades, pistols, and glowing magic powers of rock 'n' roll electricity. In just one of the film's seemingly endless parade of "greatest moments ever," The Captain shoots a grenade into the room where Guitar Wolf is hiding. Guitar Wolf leaps out of the window with bellowing fire around him, shouts "Rock 'n' roll!!!!" as he falls, then lands in a crouched position and immediately tunes his guitar. Drum Wolf and Bass Wolf finally settle matters with the application of a bazooka to the problem. After firing the bazooka and blowing a whole bunch of shit all to hell, they immediately return to drinking whiskey and combing their hair.