Perversely bad, cruel, or wicked
Not everyone has heard the true story behind the inverted cross, so many people believe it's a symbol of the Satanic church which appropriated it for their own use.
Contrast this with what most people consider as mainstream rock music, particularly those with Satanic or anti-establishment sentiments.
Better a satanic alien, apparently, than a woman.
The satanic figures of demons are often shown to be far from their angelic roots, though occasionally more tempting demons are shown as a female succubus; a provocative woman who seduces men.
His vices were rather of the sordid than of the satanic order.