Diva is a hero in the Wildstorm Universe. Born a mutant, Alessandra Fermi can project sonic energy in many different ways. She is a member of StormWatch, fighting for the U.N. underneath Battalion. Following his apparent death, she became the team's field commander. During this time she had a relationship with Cannon, and was known for being strictly by-the-book. Eventually she was killed by Despot, and her sister Isabella Fermi took her alias.
Diva was created by Brandon Choi and Jim Lee, first appearing in the WildStorm publication StormWatch #1 (1993).
