Bhall and Mulcarn never make up and became friends, although being of the same alignment meant that they no longer actually fought each other. I get the impression that Mulcarn was in on the plan to corrupt Bhall and fully supported it, but that once it worked he came to resent Agares for favoring his old enemy more than him.
Mulcarn was the least evil of the evil gods, but Mulcarn is dead. Auric used to be a very kind boy, but hsi ambition to fill the god's sphere has driven him to be even less humane than the god who never wanted humans to be created. His sins in Creation are great, and in my eyes he is more evil than the god whose shoes he hopes to fill. Mulcarn knew of The One and despite rebelling against his maker he still yearned for the good old days before the fall. (The sphere of ice is the sphere of nostalgia, which as we should know this idolization of the past tend to go along with a selective memory blinding us to the reasons we should not want to go back and makes us just make things worse and mroe different when we try to.) Auric knows nothing of The One, and his yearning is only to inflict the tyranny that his predecessor had before him in a misguided attempt to put things back to how they used to be before mortals came on the scene.
Auric is known to suffer from severe bipolar disorder, fluctuating between periods of despair and absolute confidence/passion. This may be due to his mortal form trying to fix the imbalance caused by being filled with the essence of ice, but it could also indicate the he is being manipulated. The qualities he exhibits in these episodes are those of Agares and Bhall. I tend to think that these evil gods may be behind his quest for divinity, but that he doesn't know it and that they may just want to use him to cause destruction without helping him enough to actually let him join their ranks.
In general, the gods oppose letting mortals use magic of any sort, and would likely consider any human actually ascending as an abomination who would never be welcome among them. Ceridwen, however, seems to really enjoy giving men great power (with which they tend to destroy themselves and everything they ever loved.) She taught Man sorcery, and I think she was involved in letting them steal the gems of Creation. I suspect that Ceridwen and Ceridwen alone would actually want Auric to succeed, although other evil gods would gladly use him as a tool before letting himfail.
