The Devil.

How scary is he, really?

Okay: war, death, disease, famine, telemarketers – they're all bad... but Satan himself? He doesn't seem to be doing much recently. Watching The Exorcist these days, the 70s fashions inspire more terror than the pea-soup-vomit or the little-girl-blasphemy. In the face of real-life monsters like terrorists and serial killers, the cackling flames of the Devil can seem downright quaint. Bottom line is that, in this secular age, we just don't think much about Lucifer anymore.

But he's all over the webcomics.