He was a war god, yes. He predates Kul'zog Zor though, who rose to divinity a few decades after his death.
As for his domain, it was marginally similar to Kul'zog Zor but not quite. Kul'zog Zor is more about glory in battle, while Mul'orog Grul was more about mindless, unrelenting fury.
At some point, yes.
You'd probably be looking at 9 or 10 whelps in her first litter with Ur if she'd been picked.
Someday brah, someday.
In the meantime you can always read the ghost scene in gobbenquest.
Hoo/d/, it was a quest on /d/. The loveisover archive might have it, though I couldn't say for certain.
A'ska and Ul'kaza are far less martial-focused waifus, only Zik'yi would've been joining you properly on the battlefield, more of a straightfoward fighter type than K'zala's sneakiness. Ul'kaza would've helped with your slaving activities, while A'ska would've made Ur a whole horde of babies with that legendary fertility of hers and helped keep your harem in order.
He does, quite a few in fact, I'm not sure how you could've missed that.
With the right blessings, yes.
Not under normal circumstances, of course the boons of Y'zagya Zoka (or other magical things) could make such things possible.
Yeah, the six big ones are what they are because they represent a large part of the foundation of orcish psychology and culture, they also tend to be powerful enough to observe, to some degree, what all orcs are doing, even if they aren't actively worshiping them.
Terrifying.