The actors join a cast that includes Jenn Gambatese as Glinda and Kim Zimmer as Madame Morrible.
The company also features Curt Hansen (Fiyero), Jaime Rosenstein (Nessarose), Jesse JP Johnson (Boq), Timothy Britten Parker (Dr. Dillamond) and Laurel Harris (standby for Elphaba) with Dina Bennett, Lauren Boyd, Kyle Brown, Nirine S. Brown, Antonette Cohen, Rick Desloge, Timothy A. Fitz-Gerald, Adam Fleming, Brenda Hamilton, Courtney Iventosch, Trevor Ryan Krahl, Philip Dean Lightstone, Marissa Lupp, Jonathan McGill, Kevin McMahon, Cassie Okenka, Shayla Osborn, Brandon Rubendall, Christopher Russo, Sarah Schenkkan, Pamela Shandrow, Ben Susak and Shanna VanDerwerker.
Luff was seen on Broadway in Scandalous and Ghost. Stage and screen star Davidson has been seen on Broadway in State Fair, Foxy and Oklahoma!
The hit musical plays the Music Hall at Fair Park through May 5.