Keto Shimizu

In 2012, she joined the Syfy adaptation of Being Human, as a story editor. She went on to become a writer on the show, scripting three hours ("Dream Reaper", "I'm So Lonesome I Could Die", "Of Mice and Wolfman") of the paranormal drama.[6]

In the summer of 2013, Shimizu boarded the DC Comics produced Green Arrow origin series Arrow, as an executive story editor and writer. Her first episode she co-wrote, with executive producer Marc Guggenheim, was "Broken Dolls", which was critically lauded. Other sophomore season episodes she contributed to include "Blast Radius", "Suicide Squad" and "The Man Under the Hood".[6]

On July 9, 2014, it was reported that a prequel comic book series would debut in September of that year to bridge the second and third seasons of Arrow, written by Shimizu and Guggenheim, entitled Arrow 2.5. Some of her work emphasizes the characters she established, with Bryan Q. Miller, in her Suicide Squad episode.[9][10]

With the commencement of the series' third season, Shimizu was promoted to co-producer, along with Ben Sokolowski. She and co-executive producer Jake Coburn co-wrote the season's second installment, "Sara". She co-wrote the sixth episode, "Guilty", with co-executive producer Erik Oleson. She and Coburn co-penned the season's mid-season finale "The Climb", which fully introduced supervillain Ra's al Ghul (Matt Nable). Shimizu scripted her first solo outing with "Suicidal Tendencies", helmed by Jesse Warn. It saw the reformation of Task Force-X, with new member Cupid/Carrie Cutter; and explored the past of Deadshot.[11]

Shimizu co-wrote, with Sokolowski, the fourteenth episode, "Fallout", of Arrow's sister-series The Flash. It showcased the DC superhero Firestorm (Robbie Amell(Ronnie Raymond)/Victor Garber(Professor Martin Stein)) and featured the first spoken words of supervillain Gorilla Grodd.[5]

During the 2015 Winter Television Critics Association tour, The CW announced a new 6-part animated series, Vixen, centered around the DC heroine. It premiered on CW Seed in August of the year, and was released weekly on Tuesdays. It shares the same universe as Arrow and The Flash. The series is written by Shimizu, Arrow showrunner Wendy Mericle, Brian Ford Sullivan, and comic book writer Lauren Certo.[12]

At the start of production for Arrow's fourth season, Shimizu was promoted once again; being named producer, along with Sokolowski.[13] She co-scripted the second episode of the season "The Candidate" with Guggenheim; which saw the introduction of supervillain Anarky.[14] She and new co-executive producer Speed Weed wrote the seventh episode "Brotherhood".[15] Shimizu next contributed to the 13th episode "Sins of the Father" with Sokolowski;[16] and the 15th episode "Taken", which she and Sullivan wrote a teleplay for, based on a story from Guggenheim; and the critically panned "Eleven-Fifty-Nine", co-written with Guggenheim.[17]

With the conclusion of the fourth season, Shimizu departed Arrow and relocated to spin-off DC's Legends of Tomorrow in its second season as co-executive producer, which featured the Justice Society of America.[18] She co-wrote the Reagan-era episode "Compromised," the George Lucas-themed "Raiders of the Lost Art," the dinosaur-filled "Land of the Lost," and the Tolkien-inspired "Fellowship of the Spear."[19] IGN, io9 and ComicBook.com all described the revamped second season as "the best DC TV series."[20][21][22]

At the beginning of Legends of Tomorrow's fourth season, Shimizu was named executive producer and co-showrunner of the series. After her promotio, Shimizu would go onto write an additional 12 episodes of the show, including the series final, Knocked Down, Knocked Up.[23]