How about Obnoxio the Clown killing the X-Men?
Yes, this was a real comic in the 1980s at the height of the X-Men comic craze.
The comic, Obnoxio The Clown (April, 1983) was written and drawn by Alan Kupperberg, with the nasty, cigar-smoking clown giving the X-Men trouble, all the while facing off against Eye Scream (a villain that turns into ice cream. No, really....).
