* HarsherInHindsight: In ''On A Pale Horse'', Lachesis defends Fate's meddling in Zane's life by saying that "all mankind will be damned" if they don't meddle. Come ''For Love of Evil'', we learn that Satan doesn't actually intend any such thing. Quite the opposite actually. [[spoiler: His bid to claim God's power is motivated by a desire to stop people from being damned unfairly.]] The idea that the forces of Good may have actually been preventing a desirable outcome (and unwittingly subjecting countless innocent souls to damnation) by their interference is some pretty serious FridgeHorror.
* MagnificentBastard: Satan. [[XanatosGambit Even when he loses, half the time it turns out that he's gotten what he actually wanted]], even when it's, theoretically, not in his interest.
* {{Retcon}}: The change in how Satan is presented to the reader from a clearly wicked and unrepentant villain to a sympathetic AntiVillain who is NecessarilyEvil may have been planned all along (since the signs of the latter characterization appeared in book five, well before the author decided to extend the series). Or, since Anthony only included this fully after his readership clamored for him to continue the series and to see things from Satan's perspective (which by its very nature would require casting his actions and motives in a different light than the heroes saw them), and this led to the character becoming popular, he may have altered his original view of the character. But either way, the {{Retcon}} itself works well upon re-reading the series later, particularly in how the later characterization makes scenes common to all the books look when the reader later sees them again from Satan's perspective. Even lines and actions which seemed reprehensible upon first reading still fit the sympathetic portrayal when the later-revealed thoughts and motives behind them are taken into consideration. (There's also the implication that said actions and words were either Parry [[LampshadeHanging indulging in]] [[GenreSavvy playing up the stereotype]], or a case of ThenLetMeBeEvil from which he later recovered, but this is much more ambiguous and up to the reader to decide.)
* TearJerker: Fate having to comfort Norton's successor/predecessor, a six-year-old boy.
** Also, a previous Chronos being broken at realizing that from the POV of Niobe, the woman that he had loved for 35 years, they are only meeting for the second time.
** Orlene meeting God, except God is so narcissistic that He does not react to anything anymore.
** The wedding at the end of book 5.
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