Dalanthar seems to be a favorite for this considering the rift. It's one thing for a lvl 4,6, or maybe even 9 charachter to run when they can't handle something (and presumably its not too many lvls higher than them) and for that something to follow them through town and a couple other areas, it's another thing when you leading Mithril Golems and Dragon bone golems everwhere. I left Dalanthar headed for Near the bay of Carocsa and was pummled as soon as I got through the transition. It's a nasty and unnecessary surprise. I had to transition back into Dalanthar to save my skin but still tried to clean up the mess of somebody else (died doing it). It's not like if you are running around Dregar that you have no idea what may be lurking, the giants can be bad enough.
Oh...and that nasty Golem is still there as I was unable to defeat it.