Fabio joins returning stars Ian Ziering, Tara Reid and Cassie Scerbo, as well as celeb cameos Tony Hawk, Olivia Newton-John, Chloe Lattanzi, Clay Aiken, Margaret Cho, Gilbert Gottfried and Charo, among others.
Last month, Fabio -- along with his Sharknado 5 co-stars -- dropped by ET's Comic-Con suite to dish on playing the pope, which he said was a "great" experience.
"When they told me, it was like, 'Oh my god! I'm going to play the pope?!'" the 58-year-old model said.
Sharknado 5: Global Swarming premieres Sunday, Aug. 6 at 8 p.m. ET/PT on Syfy.