* MagnificentBastard: The Demon King. Granted, it's probably in the job description. [[spoiler: The climax of Heaven to Wudang drives the point home, revealing that he's been pulling a massive long con to set up a single move that might win him the game.]]
* {{Squick}}: Was it really necessary to describe turtle sexuality in ''Demon Child''?
* WhatDoYouMeanItsNotForKids: The author mentioned in the foreword that this series was getting shelved in the YA section by some retailers. It's roughly as kid-friendly as ''Literature/ASongOfIceAndFire''.