NEW YORK—From his secret headquarters high atop the Chrysler Building, Sky Commander Rex Brady said Monday that he has been filled with ennui ever since he apprehended his archenemy, The Nefarious Dr. Disaster. "What's the use?" said Commander Brady, slumped over H.I.L.D.A., his supercomputer and confidant. "Without him, I'm just another masked, muscle-bound, unemployed phony." H.I.L.D.A. responded by encouraging Brady to pursue his other interests, like helping needy children and learning how to prepare Mediterranean cuisine.