For me Percy Jackson is something between Harry Potter and Hercules from Disney Studio.
It's not my favourite book but I like it.
This is older idea but I'm not the first person with similar concept. Check *DramaNacho66
Illustration is of course from the Percy Jackson and the Lightning Thief
On the picture: Poseidon, Zeus, Hades + Annabeth Chase, Percy Jackson and Grover Underwood.
Pencil, Photoshop CS, Paint Tool Sai and Wacom's tablet.
I hope you will like it! ;]
My other works with Disney's characters: [link]
My second work with Percy Jackson: