Azgir got attacked a mighty number of times in the Crossroads and saw the same people attack others.
He wanted a challenge so he started to fight them.
Most of those attacking neutral places and disrupting them were seen as good/great warriors, so Azgir started to just wait in the Crossroads and fight any troublemakers. At this point anyone else of any race was basically deemed an inept warrior, because those that just attacked people often won. So by fighting these guys, ppl were like "Oh hey, an Earthspawn is protecting us! Theyre not so bad!"
Its basically the lack of a challenge and immense pity for their piss poor combat skills that Azgir doesnt go after the races that tried to eradicate the Earthspawn (Humans, Elves, Dwarves). If they don't fight, he won't fight them.
Yes, Azgir got taught to open doors by using it the way it's supposed to be used, instead of ripping it off it's hinges and putting it back in. This mainly because I was the only active Earthspawn for about a year, basically forcing me to either live around others or solo-rp all the time (gets boring eventually
).
Last few times Azgir saw a Greyling ended in several people having to stop and distract him from killing it.
All in all, Azgir just deems pretty much anyone as a non-threat so he is fine with being a silly goose around them. The few worthy challengers he faced, read: Sif and only Sif, have become some sort of rival-brother from another mother hybrid.