Bitzi's mother

Buster's Grandmother is the maternal grandmother of Buster and the mother of Buster's mother, Bitzi. She lives in the same complex as Buster and his mother Bitzi, but in a different condominium.

Appearance
She looks very much like her daughter Bitzi, but wearing square glasses as opposed to the more stylish ones Bitzi wears, and is more than 20 years older than her. Sometimes she is seen in the background of episodes with one of D.W.'s preschool classmates.