The first is Garbage, the band.

I was into Garbage when I was 12 or 13. I liked, and indeed continue to like, their first album very much.
However.
Their posed nihilism really terrified me. Not because it was posed, but because I really believed it. Now, why would this be?
I had a poster of the band that came free with their CD. I ended up giving it to a friend because it frightened me too much to have it in my room. It seemed to have dark powers. I had to extricate myself from its force.
The picture on the poster was of the same vintage as the one I have posted here. Shirley Manson may have been wearing crushed velvet pants, and/or a black satin shirt. Hardly satanic material.
But it was so willfully blank, so deliberately bleak. Sure, this was signified by slightly too heavy-handed black eye make-up and lipstick. But the message it conveyed challenged me. Maybe I felt it was a dark siren song, calling to burgeoning adolescent angst and dread.
No music makes me feel like this anymore. I don't think this is because I have developed a hard ironic armour. I think, rather, it is a result of my familiarity with the tropes of pop. In this case, the figures that signify glum anarchy.
There are other bands and images that scared me when I was younger. I will share these with you anon.