nah you ain't the only one. my memory is fuzzy, but there were a couple cartoon characters i hoped would get killed or hurt. mostly those i disliked in general, specially if they were all "cutesy" like the one you pictured there.
i don't think it's that rare honestly, but fuck if i know, it feels natural to me is all

i'm sure my guro thing also started as a kid in a similar fashion, but i can't narrow it down as easily as my other fetishes. again, fuzzy memory. anyways it'll be entertaining to think about, thanks for the thought lol