I was a really easy to scare child.
I remember being like 6 or 7 and being really afraid to swim to the far end of the pool alone while taking swimming lessons, because this Yu-Gi-Oh card would always pop into my head.
Also, does anyone else remembers this final boss from a shmup called Strikers 1945 2? I recently discovered it was not some weird nightmare I had as a kid.
I remember my dad showing me the trailer or something and it freaked me the fuck out (think it was his eyeballs coming out of his head)
For some reason, the scene that broke me was when he tries to kill an alarm clock with a giant mallet in in front of his apartment,