War Angel is a fictional character created by Brian Pulido for his new line of post-Chaos comics at Avatar Press.
She exists in the same universe as the rest Pulido's new line including Lady Death and Unholy.
War Angel is supposedly thousands of years old, having appeared in the distant future in her own series, and having fought alongside Lady Death in her time.
In the 2005 three issue mini series War Angel, set in the future in the year 2232 AD, Serenity (her real name), travels to what is left of Nevada to hide out and get some cash before heading off to Xexico.
She develops feelings for Scarlet, a siren captured by the head of the warlocks named Marax and made into his slave.
War Angel slightly gets the upper hand and is about to finish off Lady Death until Pandora intervenes and hits Serenity on the back of her head and teleports her away.
Serenity is upset over the fact that God has not spoken to her in thousands of years (which contributes greatly to her personality) despite having done everything possible to get his attention.
Lady Death pointed out during their battle that anytime someone mentions the fact that God doesn't speak to her anymore, she loses focus and is prone to make mistakes.