Started in a small human town (240ish population) and felt it was much to calm. So I spawned in about 10 minotaurs to see how things would play out, but they were killed quickly and few of the citizens were even injured. I felt this was inadequate so I spawned in about 20 ettins this time. Now there's a bunch of talking 2 headed brutes charging through the keep, killing off any survivors in an almost scooby-doo like fashion, and I'm quite pleased with the results. So pleased that I retire my (batman bard) adventurer there and start as a new Ettin adventurer with dfhack (sadly I came to find out that my batman was killed in the time it took to load the world again, by my new ettin friends. Oh well). I jumped into a nearby hamlet and spawned a few more ettin pals there for good measure before heading to the town. I quickly found the keep again and was amused to see that about 10 or so ettins were still there, some living in the houses amongst the corpses of their victims, chatting about their past accomplishments. I scoured the town and found that at least 1/2 the town was alive and well! Obviously, this wasn't acceptable, so I brought in a 2nd wave of ettin reinforcements. Together we hunted down all but about 40 or so survivors and drove them from their holes, and my ettin adventurer became a vampire ettin adventurer in the process.
Now I travel to distant hamlets, drinking blood before calling in my 2 headed cronies to finish off the weak and claim the land for all of Ettin-kind!