Expy

4 vs. Satan:
*The helpers are based on the minor villains from Hybris.
Alex in Princess Quest:
*NONE
The Stone of Power:
* NONE
The Three Kingdoms
*Charles IV., Vlados Palerius and Demon Lord Degares are based King Charles III./Winston Churchill, Vladimir Putin/Vlad Draculea and President Xi, respectively.
Dragondawn
*NONE
Harter Knall
*King Greyland is a Darker and Edgier version of both the Big Bad of Robin Hood and the "Der Steuernsong"-singer/narrator.
Hero Story
*NONE
Kill the Demons
*Casper is Kefka.
Satan Saga
*NONE
Story of Hero:
*NONE
The Legend of Devils
*NONE
The Sidestory Duology:
*NONE
The Time Of Bloody Fear:
*Maltros and Rosh are split images of Dorr'n Selkesch and his unnamed servant from Carcerus.
*3: The nine demons are similar to the Tartaros guild, including the Nine Demon Gates from Fairy Tail. Specifically, Moses -> Mard Geer; Darkin -> Jiemma minus Ambition, Abuse and Treachery; Demon Prince Dhan -> also Mard Geer; Sedra -> Kyoka; Azura -> Seilah; Templestas -> Tempester; Morgy -> Ezel & Jackal; Aaron -> Torafuzar; Plutona -> Lamy & Franmalth