Conversation so far:
Was Comet good or bad?
Comet was originally introduced as a hero
What superhero was Comet with ?
Coment was with Linda Danvers as Supergirl
What powers did Comet have?
Comet had high-speed flight with a freezing contrail behind him. When he became an Angel of Love, he gained wings of ice, ice vision.
What did Comet look like?
Comet's appearance was unclear, as when using his powers he was surrounded by an aura of cold that made him resemble an actual comet
Who was Comet?
Comet was Andrea Martinez, a gay stand-up comic
Was Comet a male?
Comet could shape-shift between his human and super-powered forms involving changing gender, from the female Andrea to the male Comet

Question: What is Comet's backstory of how Comet came to be?
Self-contained rewrite: What is Comet's backstory of how Comet came to be?