Finished the Percy Jackson series, and while I liked a lot of how he incorporates bits and pieces of Roman / Greek mythos into his novels, a lot of the events made me twitch my nose.
Zeus wasn't the biggest jackass like he usually was.
Poseidon didn't favor giants and cyclopes anymore.
Ares is a dumbass, though he's supposed to be a god of war in multiple ways, and got his ass beat (which is not supposed to happen if he truly is a God of War).
Why the hell is there a Gorgon in the US? Moreover, why did so many people who supposedly died in the legends respawn to screw around with Percy this time?
Greek gods, despite being the OGs with their OG name, are clearly different from their Roman counterparts. There's a Jupiter and a Zeus?
...well, then there should be a Cronus and a Uranus...