Devil Girl Virago
A devil with unfinished business sought to create a vessel of malice to seize revenge on an angel, whom tries to counteract the devil's essence within the vessel: an unborn baby. The interference from these two empowered the baby but killed the mother. The father raised the baby in spite of it's devilish appearance, raising it to suppress her inner devil. When learning the baby was a girl, the devil wanted her to be named "Harridan" (scolding, vicious woman) but after the devil's retreat, the angel suggested "Virago" (which can mean 'a woman of strength or spirit'). She was raised to learn one important thing: self-control. Especially with the 7 Sins, for if she gives in to one too much, she loses control. When fighting the devils and angels that come for her, she's powered by the sins of banished souls. When she fully submits to a sin Virago changes appearance. When fighting, she gains a power based on strongest sin from soul she absorbs for 7 minutes (1 minute less per extra power.)
Sin of Envy - absorb the skills and abilities of others.
Sin of Gluttony - creates a powerful vacuum and turn her stomach into a literal bottomless pit, sucking up anything in her area.
Sin of Greed - makes copies of any item of her choosing.
Sin of Lust - magnetizing people to stick their bodies together.
Sin of Pride - makes what she touches swell up and pop like balloons.
Sin of Sloth - freezing people with ice until they're so cold, they fall asleep.
Sin of Wrath - burning people with fire