Regular cast members Jennifer Stone (Harper), Maria Canals-Barrera (Theresa), and David DeLuise (Jerry) appear in Part 1 but are absent from Part 2.
Maurice Godin as Ronald Longcape Sr. and Daniel Samonas as Dean Quick Facts and Trivia [S2E7] Saving Wiz Tech: Part 2
If you'd like to explore more about this era of the show, I can provide details on: The of Alex and Dean's relationship Key differences between WizTech and Hogwarts Other multi-part specials from Season 2 Regular cast members Jennifer Stone (Harper)
Professor Crumbs is revealed to be 850 years old. Maria Canals-Barrera (Theresa)