of 58 issues. Derek Charm took over art duties in May 2018. Strong trade sales at school book fairs encouraged the team to develop an original graphic novel, The Unbeatable Squirrel Girl Beats Up The Marvel Universe!, released in October 2016. While Henderson told The Hollywood Reporter balancing the graphic novel and monthly series "was almost too much work," North expressed interest in another graphic novel, calling it "a fun challenge." Starting in 2017, Squirrel Girl appeared in U.S.Avengers, a replacement title for The New Avengers. Podcast continuation In April 2022, Marvel Entertainment and Sirius XM launched Marvel's Squirrel Girl: The Unbeatable Radio Show which is a six-episode podcast series that acts as a direct continuation of the comic series. It is written by North, directed by Giovanna Sardelli and stars Milana Vayntrub as Squirrel Girl; the series is produced by Radio Point. Additionally, North "wrote an all-new 'Squirrel Girl' vertical comic tie-in" which debuted on Marvel Unlimited. Fictional character biography Doreen Allene Green was born to Dorian and Maureen Green in Canada. When she was 10 years old, Doreen discovered she could communicate with squirrels; she suffered a modification in her genes for unknown reasons that granted her squirrel-like abilities, which manifested predominantly as a prehensile tail. When her parents consulted a doctor, it was determined that Doreen wasn't a mutant, even though she believed so for a long time. She is first seen as Squirrel Girl ambushing Iron Man in a forest, hoping to impress the veteran hero and become his sidekick. The 14-year-old introduces herself and her pet squirrel, Monkey Joe, and displays her squirrel-themed abilities. After she rescues Iron Man from Doctor Doom with the help of a horde of squirrels, Iron Man says she is too young to fight crime, but that he will put in a good word for her to the Avengers when she is older. Great Lakes Avengers Years later, having moved to New York City, Doreen joins the Great Lakes Avengers. Squirrel Girl introduces each issue of the team's miniseries, providing an opinion about the contents of the series. Her sidekick Monkey Joe also joins the team and comments upon the series as well. He is later killed by Leather Boy, a rejected GLA member who was disguised as Doctor Doom. Enraged by the death of her friend, Squirrel Girl assembles a squirrel army to stop the villain Maelstrom. She finds