"A Thunderbolt in the Rain" from Peter Cannon, Thunderbolt #3 (DC, 1992) by Mike Collins and José Marzan Jr.
Of the heroes DC bought from Charlton, Peter Cannon AKA Thunderbolt might have had more success, perhaps, if he'd been introduced at the same time as Blue Beetle, Captain Atom and the Question. Two of those got Justice League membership out of it, and all of three had series lasting 2-4 years. Cannon's lasted but a year and very few DC appearances besides. From what I understand, ownership reverted to the creator's estate (Pete Morisi) which is how Dynamite! has been able to publish a Peter Cannon series. I guess that's what happens when characters go unused, though it may be specific to the original Charlton deal, I don't know.