Originally he used his x-ray vision to heat things up, and somewhere down the line heat vision became a distinct power in its own right.

I think DC has established before that Metropolis is on the Eastern Seaboard (specifically Delaware according to some sources).

The Whizzer. So, it's Quicksilver or nobody.

I've seen many of the "worst movies ever made," and "Leonard Part 6" is the only one that I genuinely regret seeing. Every other time, I've found something appealing or interesting about a movie, whether it's a particular shot, a line of dialogue, or a performance. "Leonard Part 6" has nothing.