Angra Mainyu
In Zoroastrianism, darvand, in its original Avestan form "dregvant" means 'wicked'. It is an ethical appellation of unrighteous persons. Angra Mainyu, the Evil Spirit, is a "dregvant" or "darvand" or wicked, as Spenta Mainyu, the Good Spirit, is "ashavan" or righteous.