Essential characters from the Harley Quinn universe:Poison Ivy (partner and ally), the Gotham City Sirens (Catwoman, Ivy, Harley), the Birds of Prey, Punchline (modern rival), the Joker (founding relationship), and Power Girl — a universe that evolved from a simple sidekick to a major independent franchise.

Harley Quinn is one of the rare characters born outside of comics (Batman: The Animated Series, 1992) to have conquered a central place in the DC universe. His first comic book appearance in Batman Adventures #12 (1993) has become one of the most sought-after and expensive modern issues on the market.

The Harley universe has expanded considerably in recent years, going from the Joker's simple companion to an independent anti-heroine surrounded by her own cast. For the collector, this represents ever-expanding territory with key issues steadily increasing in value.

Essential first appearances

Harley Quinn — origins

Batman Adventures #12 (1993) is the absolute grail — Harley's first comic book appearance. In main DC continuity, she appears in Batman: Harley Quinn #1 (1999) by Paul Dini. Both issues are centerpieces of any modern DC collection.

Punchline — the rival

Alexis Kaye aka Punchline appears in Batman #89 (2020, cameo) then fully in Batman #92 (2020). Created by James Tynion IV as the Joker's new partner, she represents Harley's direct antagonist in the modern era.

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Allies and supporting cast

Poison Ivy

Pamela Isley appears in Batman #181 (1966). His relationship with Harley—first friendship and then canon romance—became one of DC's most popular duos. Their dynamic is at the heart of many modern series.

Gotham City Sirens

The Harley/Ivy/Catwoman trio forms the Gotham City Sirens in the eponymous series (2009-2011, 26 issues) by Paul Dini and Guillem March. #1 has become a key number sought after for his team formation.

Birds of Prey

Harley joins various incarnations of the Birds of Prey in modern adaptations. The Cinematic Connection (2020) propelled the value of several numbers related to this team.

Derivative series and essential runs

The Harley Quinn solo series include: the initial run (2000-2004, 38 issues), the Conner/Palmiotti run (New 52, ​​2013-2016, 30 issues) considered the best, then their continuation Rebirth (2016-2020). The seriesHarley Quinn: Black + White + Redder(2023) offers short stories by diverse creators.

Essential related titles:Harley Quinn & Poison Ivy(2019-2020),Gotham City Sirens(2009-2011),Harley Quinn: Breaking Glass(OGN 2019), and the multiple annual one-shots.

Collection strategy

Batman Adventures #12 is the flagship issue but its price is high — aim for a mid-grade copy or start with Batman: Harley Quinn #1 (1999). The Conner/Palmiotti run is complete and affordable. Artgerm and other cover variants are particularly popular. Consult our guides onharley quinn key numbersand thecharacter storyto go deeper.

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