"You're really saying that in a franchise drawing exclusively from European mythology and folklore, you have an issue with a monster Gary Gygax invented for Dungeons and Dragons in 1974?!"
Some of you folks are beyond parody...
God of War is a fantasy franchise in which you confront Gods of various mythologies, has a talking decapitated head, wield ever burning blades chained to your arms, and throw an axe retrieved by a telekinesis.
But sure, go on, tell me how a Gelatinous Cube doesn't fit.