
Logos |
I've always kinda wanted to run a epic game where the epic characters are litterally rebelling against destiny (presented as abstract entities and maruts) so they can try their own hand at making the world a happy place, rather than letting another 1000 years of unhappiness and suffering so that moral philosophy can develop to the point where the idea of rights for all come along and all that.

Hastur |

Ummm.... I ran AoW all the way through, and the BBEG at the end is Kyuss, the worm-god, pretty much your "typical immortal" really. There's plenty of interesting stuff wrapped around that, but in the end the PC's are fighting a God of some sort, who's trying to enter the world and lay the smack down...
The most interesting, or at least different part of the final fight is probably what additional opponents the PC's have to fight at the same time. For example, in my group they managed to have Lashonna there too, which made it especially hard for them - now she was a good example of a somewhat non-traditional BBEG... The players always knew they would end up fighting Kyuss, but they never knew what or who else would be helping him until they got there...