"What's Halloween without a spooky tale or two?" Steve asks rhetorically, before turning to Harry's question. "In the world I'm from, there are people with amazing abilities, and quite a few have turned those abilities toward helping people. I used to be one--I enlisted for the second World War, got put in an experimental program to make a better soldier. That was, well, years ago. These days, I'm the director of S.H.I.E.L.D. It's, ah, sort of an international agency, oversees superpowered problems and extraordinary situations."