I think Khazar. Really, whenever you go in his realm he goes "Help me Ally. YOu must help me." I mean REALLY he barely does anything for us and we work our butts off!
I say the Aztec god, Khazar didn't talk to you unless you went to his realm, but the aztec god he just always kept saying "Now you shall die" Or "This will fuel my armys."
I voted Khazar. Always complaining, never really helping, and spamming you with messages and slowing the game down doesn't help. Plus, he's yellow. I dislike yellow.
I actually found Lethys to be funny. The way he whines as you completely decimate his towns.