|Voiced By||Seth Green|
|Relatives|| Dr. Z (husband)
Ro-Boy (adoptive son)
Mrs. Z is the wife of Dr. Z and the adoptive mother of Ro-Boy.
Mrs. Z is older than Dr. Z the two married late in life and although happy they were unable to have children.
Mrs. Z is introduced to the therapy group by her husband Dr. Z. She cooks food for their guests and as her husband talks he reveals that his wife is older than him and they have enjoyed a quiet life since his retirement from villainy. He then notes that despite their happiness they were unable to have children that is until Ro-Boy offers to become part of their family which elates them as they share a hug.