Sean (uncle)

                                                  '' Arthur's Unnamed Uncle is Arthur, D.W., and Baby Kate's Uncle, the brother of David Read, and son of Grandma Thora. He appears in one episode- Arthur's Cousin Catastrophe. He is known for being haughty and snobbish.

Appearance
Arthur's Unnamed Uncle appears to be about David's age or slightly older. He has well-combed hair and glasses. He is seen in an orange polo and shorts. He wears brown loafers and long, creamy brown socks.

Personality
In his conversations with Grandma Thora, it is revealed he is a writer. He is very intelligent, but sometimes doesn't understand that people don't care about his smarts. He also finds Arthur strange, mostly because Arthur was trying to avoid Monique.

Family
He is married to Arthur's Aunt Bonnie. They live together with their son, George, in Ohio.