Shrek
In the first movie, Shrek describes ogres to Donkey by using this vegetable as an analogy.
What is an onion?
Oculo-.
What is eye?
In Shrek 2, Harold sacrifices himself to protect Fiona from being turned into this animal- a polymorphed state in which he stays until the following movie.
What is a frog?
[DAILY DOUBLE]
Bucco-.
What is cheek?
This song plays at the end of the first film.
What is I'm A Believer?
Oto-.
What is ear?
In the second film, Shrek, Donkey, and Puss are arrested on live on this TV show- a in-universe parody of COPS.
What is KNIGHTS?
Glosso-
What is tongue?
According to Gingy, during his interrogation with Lord Farquaad in the first film, this is who "she" is married to.
Who is the Muffin Man?
Rhino-.
What is nose?