Just did another chain of Threatening runs for the weekend event and something different happened.
Had a Katari in the group, I've been hosting a lot this weekend, helping the pugs get their games in and such, seen the level 20's and the lower levels with no banners or titles. But this Katari was different, but not in a bad way.
When I play my Keeper I'll usually try to get ahead of everyone before each pull, not to try to be Johnny Rambo, but to get my Barrier ready. I found that in pugs half the time the group will see my Keeper with her hand raised and group up for Barrier and half the other times they will run right by and be split up enough to where I can only get myself and one other person. Once I cast that Barrier though, I'm off! 
Anyways, this is what I was doing for one run. Get ahead, manage to get Barrier on the Templar and the Katari and then Fade Step into the sea of mobs. It took me a few pulls to notice, but the Katari started shadowing me. Even going so far as to follow me into treasure rooms that were guaranteed not to have a guardian and he even followed me when I went to plant the Banner in Zone 5 and run back to "The Room."
He stayed for the rest of the runs I did that night. My little(Big?) Katari bodyguard, was good times and he actually helped me out a lot knocking down the rogues and archers that I would miss and start attacking me from behind.
Bodyguards are great!