This is the first I've heard of post-crisis Comet! Are there any issues you rec? Panels you want to share?
Sure! Post-Crisis Comet basically only shows up in the 1996 Supergirl series by Peter David, sort of scattered throughout. She first shows up in #10 as a stand-up comic going by Andy Jones, though her real name is Andrea Martinez:
Supergirl #10
The bald guy is Linda's (Supergirl) friend Cutter...and Andy's ex-husband. His reaction in the last panel here is because he knows that Andy's a lesbian and why she wants Linda to be the one to show her around, but isn't going to say anything (probably more because he thinks it's funny than so as not to out Andy, but the end result is better than if he was like "GUESS WHAT, LINDA"). Although Andy's haircut is doing a lot of heavy lifting for 1997 anyway.
(Andy does eventually ask Linda out, and Linda politely declines, for the record.)
In #19, Supergirl meets the town's new hero, Comet, who has flight, super speed, ice powers, and unspecified and sort of dubious love powers:
Unsurprisingly, she does not immediately guess that he and Andy are the same person!
Finally, in #26, we get the reveal and the on-page transformation:
This, by the way, is exactly the same thing Linda was doing at the time - switching from petite brunette Linda to tall blonde Supergirl (who arguably doesn't have a gender anyway). That's because they are both "Earth-born angels," i.e. 2 of 3 divine figures who represent God's feminine energy on Earth, who gained divine power when a superpowered being sacrificed themselves by merging with a dying mortal to save their life.
In Linda's case, Supergirl was a protoplasmic being from another dimension called Matrix who merged with a dying Linda Danvers who had been sacrificed (uh...consensually) by a cult. She's the angel of fire.
In Andy's case, the original Andy Jones was a jockey who got in a terrible horse accident and was approached by shady scientists who gave him superpowers via horse DNA and he became Comet, and then merged with Andrea who was dying because she decided to commit semi-passive suicide by climbing Mt. Everest solo after her homophobic family cut ties with her. He's the angel of love.
(There's a third angel, Blythe, the angel of light. She and Comet end up together at the end of the comic, which is nice.)
Comics, everybody!
I love this series a lot but this is one of the loopier aspects of it. There's also a little boy running around who may or may not be God. THERE'S A LOT GOING ON.
Anyway, I do recommend exploring the 1996 Supergirl series. Andy is sometimes handled a little clunkily, but she's also one of the first queer superheroes in comics and you can tell she was written with really earnest intent. Presumably since everything is canon in the DCU now she's somewhere out there doing stand-up and having horse DNA to this very day!
