No collection of Bad Halloween Costumes would be complete without an example or two of those hideous "box" costumes from the past.
You know the kind - plastic mask held on with rubber-band and highly-flammable mylar bag as tunic. Produce one for absolutely every entertainment property that was even remotely popular with kids.
I wore these almost exclusively throughout the '70s. Sadly, I was out of the Halloween game before the Village People (above) became famous.