I've watched nearly all its episodes back when it was originally aired on Cartoon Network, and thought that I'd forgotten about all of it until, thanks to your post, I google-images searched it and everything returned to my mind. Basically the specific characters and scenes, but not much about what the episodes were of!! I don't think it particularly traumatized me in comparison to other media because it's already self-advertised as a scary series, so one gets in half-prepared for what's to come