Now, I am going to be honest.
When I watched Code Geass, it wasn't the Knightmares or any of that that spoke to me. It was Lelouch. His character was amazing and well done, and he was clever in his use of Geass and how he transformed petty terrorists into a full fledged fighting force very quickly.
I was pissed when Lelouch was betrayed by his own forces, and almost about drown myself after the ending. The end of Lelouch (Or is it?). Lelouch was brilliant in battle, often luring the enemy into his trap. However, the Lancelot foiled his plans often, and his relationship with Suzaku adds depth to him. Lelouch is also realistic, more so than Kira Yamato from SEED. Because not all his plans work nor does he overratedly win all the time.
When it came to my favorite anime characters, some of my tops are Lunamaria, Char, Athrun, Setsuna, and Lelouch. (I am a mecha person, I prefer Gundam above all other anime but from time to time I will watch others, like SAO or Death note).
As I would command people to say...
ALL
HAIL
LELOUCH!