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1st team appearance of the Batman Beyond Universe, Justice League Unlimited: Superman, Barda, Warhawk (1st), Kai-Ro (1st), Mareena (1st)
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1st appearance of Kwiz Kid, a Riddler-type character
1st appearance of Kitten, the daughter of Killer Moth
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1st team appearance of Emoticlones: Red Raven, Graphite Raven, Yellow Raven, Green Raven, Violet Raven - manifestations of Raven's emotions
Copies ordered by retailers: 9,041
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First comic book series based on Batman The Animated Series
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DC Animated Universe version of the Batman/Wolverine mashup character introduced by Amalgam Comics in Legends of the Dark Claw #1, DC/Marvel co-publishing imprint
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Premiere issue based on the Justice League animated TV series (2001 - 2006)
Cover art illustrated by Bruce Timm and painted by Alex Ross
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1st full appearance of the Grey Ghost
Copies ordered by retailers: 12,188
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1st cover appearance of the Grey Ghost in the comic book DCAU, DC Animated Universe
1st appearance of Red Claw, a female assassin
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Team-up of Harley Quinn, Catwoman and Poison Ivy in the DC Animated Universe
Copies ordered by retailers: 6,609

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Final issue
Copies ordered by retailers: 5,337
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1st appearance of Geo-Force in a DCAU comic

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1st appearance of Teen Lantern, Jordana Gardner, a descendant of Guy Gardner
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1st appearance of the animated Teen Titans in comic books
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1st appearance of Pink X, claims to be daughter of Red X but is Kitten in disguise
Copies ordered by retailers: 8,894
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Cover art by Shane Glines featuring Harley Quinn
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Cover art by Bob Smith featuring Poison Ivy
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Cover art by Bob Smith featuring Harley Quinn
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Team-up with Batman featuring Scarecrow
Copies ordered by retailers: 8,984
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1st appearance of Amazo 2000
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1st appearance of Mercy Graves in a comic book
Mercy Graves debuted on the TV series 'Superman: The Animated Adventures'

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2nd appearance and origin of Harley Quinn, not in the mainstream universe
1st appearance of Bud and Lou in comics, Harley's pet hyenas
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4th appearance of Harley Quinn, went on-sale the same day as Batman Adventures: Holiday Special #1
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Wedding of Harley Quinn and the Joker, is interrupted
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Cover art by Darwyn Cooke featuring Batman and Catwoman
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Cover art by Bruce Timm
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Cover art by Kelsey Shannon featuring Catwoman
12,880 copies in circulation
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Sequel to Batman: Mask of the Phantasm
⚠ Misconception: some sources misidentify this issue as the first appearance of Phantasm which occurs in Batman: Mask of the Phantasm #1 (1993)
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Winner of the 'Best Single Issue' Harvey Award
Featuring 'White Christmas,' by Paul Dini, considered one of the best Mr. Freeze stories of all time
Featuring 'The Harley and The Ivy' by Paul Dini, a classic Harley Quinn and Poison Ivy story
4th appearance of Harley Quinn in comics, went on-sale the same day as Batman Adventures #28
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1st appearance of Harley Quinn in a standard comic
[August 2022 - Lady Gaga confirmed to star opposite Joaquin Phoenix in the Joker movie sequel as Harley Quinn / March 2023 - a set photo from the Joker sequel provides a first look at Lady Gaga as Harley]
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3rd appearance of Harley Quinn
1st appearance of Roxy Rocket
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Cover art by Ty Templeton featuring the Joker
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Cover art by Rick Burchett
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Cover art by Ty Templeton
Superman Adventures #56
Promo ⋅ DC ⋅ 2001
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Scarce promotional exclusive produced for a licensing partnership with Infogrames, a video game developer
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Copies ordered by retailers: 8,964
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Final issue
Copies ordered by retailers: 9,178
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22 one-page stories written by Mark Millar with multiple artist contributions
Copies ordered by retailers: 11,526
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1st appearance of Livewire based off of the animated series, later becomes part of DC continuity
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1st appearance of the DCAU (DC Animated Universe) Supergirl in comics

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