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1st Appearances 2021
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- 1st cameo appearance of Tal Bota
- 1st appearance of Leox Gyasi
- 1st appearance of Affie Hollow
- 1st appearance of Geode, a space rock
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- 1st appearance of Clementine, a character originally introduced in Telltale's The Walking Dead video game
- Anthology of stories including Rick Grimes 2000, the continuation of a story from The Walking Dead #75
- Five-issue limited series celebrating Skybound' s10 year anniversary
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- 1st team appearance of the X-Men of Krakoa: Cyclops, Marvel Girl, Sunfire, Rogue, Synch, Polaris and Laura Kinney as Wolverine
- 1st appearance of Cordyceps Jones
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- 1st full appearance of the Phantom Ranger and revealed that he is made of energy from the Morphin Grid
- Origin of Rita Repulsa
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- 1st appearance of Quiz, an ally of the Riddler
- In Batman Chronicles #3, Riddler's henchwomen Quiz and Query debut but visually different than the character who is introduced in this issue
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- 1st full appearance of Aaron Fischer, a young gay man sworn to protect other homeless teens and runaways
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- Infinite Destinies part three
- 1st full team appearance of Tiger Division: The General, Luna Snow, Mr. Enigma, Gun-R II, Auntie Ante, White Fox
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- 1st appearance of Deva Lompop, a bounty hunter
- 🗝 KEY OF THE WEEK: GOTHAM CITY COMICS (MESA, AZ)
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- 1st full team appearance of Gamma Flight: Puck, Absorbing Man, Doc Sasquatch, Titania and Charlene McGownan
- 1st appearance of Stockpile, a Gamma Mutate
- Reintroduction of Skaar
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- One-shot prologue to the new Spawn Universe expansion of titles: King Spawn (August), Gunslinger (October) ending the year with a team book titled Scorched
- 1st appearance of Disruptor
- 1st appearance of Jericho
- Return of Cy-Gor and Cogliostro
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- Chapter 2 of Rick Grimes 2000, a super soldier version of The Walking Dead protagonist
- Anthology of stories featuring Stillwater and Birthright
- 1st appearance of Everyday Hero Machine Boy
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- 1st appearance Yukichi Yamamoto
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- 1st cameo appearance of a new pantheon of gods as children
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- 1st appearance of Dreamer, a character from the CW's Supergirl debuting in comics
- 1st team appearance of Justice League Queer: Jackson Hyde, Steel, Bunker, Batwoman, Crush, Extraño, Tasmanian Devil, Shining Knight, Midnighter, Apollo, Traci Thirteen, Tremor, Syl, Aerie, Wink, the Ray
- 1st appearance Nia Nal
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- 1st appearance of Harley Keener, a boy who first appeared in the movie, Iron Man 3
- Reintroduction of Onome
- 1st team appearance of the Worldwide Engineering Brigade
- Onome and Keener are both featured characters at Disney’s Avengers Campus
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- 1st appearance of Ari Agbayani, a Filipino -American hero
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- 1st appearance of Stitch. a character seemingly inspired by Ragman