Muffin Man is a character that is Gingy's father
Appearences
Shrek
In Shrek He is Metioned by Gingy that he is married to the Muffin Man meaning that he is only married once
Shrek 2
In Shrek 2 Gingy went to the Bakery To tell the Muffin Man he has a big order to fill with Shrek during the Wedding Ball
The Muffin man greets Gingy
Shrek the Third
In Shrek the Third he makes a cameo during Gingy's flashbacks
Shrek Forever After
In Shrek Forever After he is seen during the Ogre Triplets birthday party and watching Gingy's fight animal crackers in the altrenate universe