Akiko Fuji (Ultraman F)

The alternate version of Akiko Fuji (フジ・アキコ) is the main viewpoint character of the 2016 novel Ultraman F. Because of her previous kidnapping incident by Alien Mefilas, she was left with remnants of the former's legacy that would serve as a plot point to the story.

Ultraman F
This Akiko Fuji basically shares her past story and exploits to those of her television counterpart.

One year after Ultraman left the Earth, military branches from around the world was forced to improvised their assets and weaponry when the giant of light no longer protect the Earth. Since Hayata was exposed as the host of Ultraman, he agreed to let himself being experimented while Fuji was the only one that protested such decision.

When Beast the One wreak havoc in Shinjuku, Inpei Seant decided to collaborate his project with Ide as they create the Ultra Armor through the Alien Ruperts' technology. The armored giants were able to destroy the monster (so much so that it was destroyed to cellular levels to prevent Beast cells from spreading) but the explosion effect caused all giants to wreak havoc.

Meanwhile, Fuji was exposed with the original Ultraman's wave and transform into Giant Member Fuji, incapacitating all of Inpei/Ide's armored giants before Dr. Ichinotani shrink them to normal size via Thermal Atomic X-ray. Ide investigated and discovered that Fuji's body contains nanobots implanted by Alien Mefilas that turn her giant. With the Giant Soldier projects were banned by United Nations, Ide and Inpei decided to use Fuji as another Giant Soldier, since her variant allows her to retain her sanity unlike the former project. When child scientists Soso and Utsutsu sold their humanity to Dark Zagi, Giant Soldier F fought all three Dark Giants until she was blown with three simultaneous attacks from her opponent. Their power caused her to become an Ultra-like being named Ultraman F, proceeding to defeat them all at once. Mephisto however peacefully left when Utsutsu (Faust) plead him to stop fighting.

Trivia

 * She is the only human character to be illustrated in the novel.
 * Ultraman F's designer is Masayuki Gotou. Surprisingly F's appearance was related by many to Ultraman Saga, both coincidentally had fought against a Hyper Zetton.
 * In a similar case to Arashi and Furuhashi, the novel had Akiko Fuji written as a twin sister to Yuriko Edogawa, one of the main characters of Ultra Q. This is due to their original incarnations share the same actress, Hiroko Sakurai.
 * Had Yuriko not existed, another relative would have been used as a substitute to save F and revert her to Fuji.