Whoever took those books was a pretty cold blooded dude.
You figure you'll cool it on the time travel for a while. Don't want to see the Dave corpses start to pile up. Especially if one of them winds up being you.
Hey check it out. Every week we'll be revealing some new troll characters from Hiveswap until Act 2 is out. Follow the Troll Call here, and meet the first two here. Expect a few more surprises like this to drop in coming weeks.