Claudia

"There's no such thing as ant-people, D.W. They seem like ants because we're so high." "There are so ant-people. There's our Aunt Bonnie, Aunt Ruthie, Aunt Hilary, Aunt Claudia..."

- Arthur Read and D.W. Read

Claudia is one of D.W.'s aunts.

Arthur

 * 703a. "Ants in Arthur's Pants"