The Who Family are the main Whos in How the Grinch Stole Christmas: The Musical.
Grandpa is a strict and grumpy old Who. He is married to Grandma Who and is the father of Mama Who and Auntie Who. He's also the grandpa of Boo, Danny, Annie, Betty Lou, Scallop, Bootsie, and Cindy Lou.
Grandma is a goofy old Who who is married to Grandpa. She is the mother of Mama and Auntie and gas many grandchildren including Boo, Cindy Lou, Danny, Scallop, and more.
Papa is a wise and cheerful Who and is married to Mama. His childrew are Annie, Betty, Danny, Boo, and Cindy Lou.
Mama is a comedic and motherly character who cares for Boo, Danny, Cindy, Betty, and Annie. Her neisses are Scallop and Bootsie. Also, she is the daughter of Grandma and Grandpa.