Gene Simmons?

He was at the right convention and they snagged him for an interview. Gene is usually a horribly vile interviewee, but they were able to get some nice and sincere sounding 15-second quotables from him.

Besides the incredible background description of Siegel's and Shuster's world and the appearance of Stan Lee, Gene Simmons' appearance was a rare first-hand perspective that hinted at the oppressed Jewish immigrant identity at Superman's core.

He's as qualified as anyone to talk about superheroes, he is one himself.