Danny Phantom AU: The Phantom Men
In this AU, the college ghost portal goes horribly wrong in a different way, and explodes, giving Vlad, Maddie, and Jack ghost powers, and ecto-acne.
After developing their ghost powers, Jack, Maddie and Vlad use their powers to fight crime.
Vlad/Plasmius
Vlad gains the same powers he has in the show. Not much to say, really.
Jack/Tempest
Jack's ghost powers are somewhat weather based, similar to that of Vortex, the weather ghost. Jack's ghost form is a genie-like entity, with a bald head and pointed ears, and a black beard, and a cloud-like ghost tail in place of his legs.
Maddie/Echo Lady
Maddie's ghost powers are noise based. Her echoes can sound out signals to anyone far away, and she can hear things from long distances. Her ghost form gives her a cape which kind of resembles a bat's wings. She also has an ability called Scream, similar to Ghostly Wail.
ALL:
they have intangibility and invisibility and flight as well.