"Fun isn't torture and torture isn't fun! I mean seriously... but honestly if you're going to be harsh about it fine, fine. I'll take a different approach. Spoilsport."
"Lo! I, the evil demon Lifestealer, master and conjurer of evil, summoner of evil magics, possessor of peoples, leader astray of nations, the evilest of all evils, evil evil evil blah blah blah blah... am being chased away by this holy light! Aaaaah, it burns! My evil burns in the holy light! My evil is burning away in the holy light! Burning burning burning! EEEEVIL!"
"My evil powers are worthless in this holy light! But my evil shall endure! Aaaargh! Evil evil evil burning away! In the holy light! Aaargh! EVIL!"
"The holy light! It burns my evil away! Aaaaargh it burns! EEEEVIL is burning! I am being banished to the Other Realm! AAAAARGH!" Lifestealer continues writhing in apparent agony before twisting into a tiny blue sphere and imploding, creating a potent(but ultimately harmless wind) for a few seconds. And just like that, Lifestealer was back in the Divine Realm.
~~~
"Well! Is that good enough for you? Now you have the perfect antagonist! I mean, it's not like I was perfectly harmless or anything, I was obviously an evil demon sent to lead her astray! Oh wait. Perfectly harmless(well not perfectly, but you catch my drift), that's me! I mean seriously. Lighten up, man!"