Originally posted by VirginiaR:
they changed their tune and decided that red sun Superman was like Batman, a hero with cool gadgets.
There are at least two versions of Clark being a Batman style character under a red sun. One where he and Jimmy Olsen are in the bottled city of Kandor and one where he and Lois are on a version of Krypton. In both cases he used Nightwing and Flamebird as identities. The story about that was what gave Dick Grayson the idea to use Nightwing.
Clark and Lois as Nightwing and Flamebird