Cast additions include Michael Mando, Patrick Fabian and Rhea Seehorn
'This Is Spinal Tap' star will play Dr. Thurber in the series, which debuts in November
Jesse Pinkman could be back for the AMC spin-off, but not Hank
Banks will reprise his role as Mike Ehrmantraut
The veteran actor says his hard-as-nails character on the NBC comedy "really does care"
Cross will play the estranged son of a previous fan-favorite
Jonathan Banks will play a criminology professor in NBC comedy
Banks got some crucial news at an engagement party