These are definitely worth a read for any Code Geass fan. They give extra insight to the series and more depth to the characters. This novel series highlights a lot of the in between scenes that are referenced or mentioned in the anime. If you ever wanted to see things like more school moments, the times Lelouch and Nunnally spent at the Kururugi household, or things of that nature, I recommend the novels. The only out of character moment I can speak of is when Nunnally said "Bullshit". Of course, she was referring to the card game, but it was still quite strange.