Halloween Costume Guide
The Dee Dee Twins are Harley Quinn’s granddaughters, raised to stay away from her old life, who join the Joker’s namesake gang anyway. The matching orange wigs and white clown makeup are what actually make this recognizable, and the whole thing works best done as an actual pair rather than solo. Both twins, Delia and Deidre Dennis, are voiced by Melissa Joan Hart in Batman Beyond: Return of the Joker (Wikipedia), and they’re minor characters even within that show’s own fan base.
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The wigs and face paint are what actually make this readable, and neither piece works alone, this costume genuinely needs two people committed to matching each other exactly. Keep every detail identical between the two of you, mismatched shorts or slightly different makeup breaks the whole “twin” gimmick that the reference depends on. At a party, if only one of you commits fully to the makeup, the other person just looks like they’re wearing a red-and-white outfit for no reason.
The twins move and fight in sync, drawing on gymnastics and acrobatics more than brute force, and that coordinated physicality is a big part of what makes them memorable in the show. Playing them well is less about individual personality and more about moving and posing as a matched pair.
White face paint transfers onto everything it touches
At a crowded party, expect it to end up on drinks, other people’s clothes, and your own collar. Set it with translucent powder and keep touch-up wipes handy.
This costume falls apart without a second person
Doing it solo just reads as a vague clown-adjacent look. Only commit to this one if you actually have a twin, sibling, or friend willing to match you exactly.
Duo Idea
Excellent pairing with real family history, since the twins are literally Harley’s granddaughters and inherited her look and fighting style despite her efforts to keep them out of that life. It’s a strong three-generation joke if you can find someone to play classic Harley alongside the pair.
Group Idea: Jokerz Gang
Strong group for fans of Batman Beyond specifically, the gang has a distinct enough visual identity that a full group reads well together. Outside that fan base, expect to explain who everyone is.
Duo Idea
Might work, but this only lands with a crowd that specifically knows Batman Beyond as its own show rather than general Batman lore. It’s a real hero-versus-gang dynamic, just a niche one.
Group Idea: Batman Beyond Villains
Might work, but this pulls from across different corners of Batman Beyond’s villain roster rather than one clean team, so it needs a group willing to explain the connections. It reads best to viewers who know the show well beyond just the movie.
The wigs and face paint are worth buying, in matching pairs. The rest is common or cheap.
The twins move and react in sync, playful and a little unsettling because of how coordinated they are.
Wear a red crop top with white bootie shorts and a white skinny belt, add an orange bob wig and a white newsboy hat, then finish with white face paint, red makeup accents, and red go-go boots. Doing this as a matching duo with someone else is what actually sells the reference.
Very niche. Batman Beyond has a dedicated cult following, but the Dee Dee Twins are minor antagonists even within that show, not main cast. This one is really only for people who know Batman Beyond specifically and want a twin or duo costume with a real story behind it.
There’s no single widely quoted line from either twin. Their appeal comes more from their acrobatic fighting style and matching visual gimmick than from any specific piece of dialogue.
Both Dee Dee twins, Delia and Deidre Dennis, are voiced by Melissa Joan Hart in Batman Beyond: Return of the Joker.
They’re the granddaughters of Harley Quinn, who raised them after retiring from villainy. Despite her efforts to keep them out of that life, both twins inherited her acrobatic skills and her fascination with the Joker, and joined the Jokerz gang while still in their early teens.
Who is the Dee Dee Twins’ grandmother in Batman Beyond?
What gang do the Dee Dee Twins belong to?