During the scene where Malina and Guaca bump into Yzma in the hallway, Malina's shirt changes from white to red and back again.
Yzma: Kronk, I am about to wig out! We've searched every buzzin' joint today's hepcats frequent. The penny arcade, the roller rink, the ice cream saloon....!
Kronk: Yeah, well, there's Kuzco. (spots Kuzco floating on a raft) He could probably tell us where he likes to hang out.
The scenes where Mr. Purutu (Ben Stein) calls out role in his monotone voice, repeating Kuzco's name, or asks if anyone knows the answer to the question, are a parody of the economics teacher (also Stein) from the movie Ferris Bueller's Day Off.