Uncle Thistleberry is Dex's Uncle. He has either physically met some of the AMs or talked to them on the phone and seems like a very nice man.
Important Stuff to Know Edit
Thistleberry is from the Yukon and has showed up unannounced to Dex out of concern in lieu of the recent EM/AM deaths. Thistle and Dex have a system where Thistle will bail out Dex (for 5 times only) in a bad situation, no questions asked.
Suspicions About Thistleberry Edit
Kevin pointed out the fake mustache while several AMs hung out on Sept 2nd. Kevin and Chelsea behaved generally suspicious of Uncle Thistleberry on Sept 2nd. Jack pointed out that, "everyone realizes that no one would be named that, right?"