Dee Dee (Delia and Deirdre Dennis) are the twin granddaughters of Harley Quinn. Though the Joker's Moll had moved on from the Joker, she was angry at her granddaughters for joining the Jokerz. The gang they were part of - led by Chucko - eventually went to work for a copy of the actual Joker that was implanted into Tim Drake's body.
In an alternate timeline, the Dee Dee sisters were employed by Chronos. He granted them the power of duplication. With their energy whips, they were responsible for the deaths of Kai-Ro and Terry McGinnis.
- The Dee Dees were voiced by Melissa Joan Hart.
- In the alternate timeline featured in "The Once and Future Thing, Part II: Time, Warped", both Dee Dees were able to split into two identical beings whenever they hit a wall or a solid object.
- 10 Appearances of Dee Dee (DCAU)
- 1 Images featuring Dee Dee (DCAU)
- Quotations by or about Dee Dee (DCAU)
- Character Gallery: Dee Dee (DCAU)