Eto

Eto (エト, Eto) is an executive of Aogiri Tree. Eto is often seen interacting with fellow Aogiri member, Tatara. Her relation with the One-Eyed King is unclear. However the CCG and Nico speculates that they are the same person. As Eto, she has a child-like appearance. Eto's whole body is covered in bandages. When her bandages are removed though, she takes the appearance of a full-grown woman with long hair bangs to the side. Her right eye is a kakugan while her left eye is normal. Her facial features are very similar to her mother. As Takatsuki, she is a young girl in her 20s with light hair and usually has a sleepy or clumsy expression on her face. As the One Eyed Owl, her kakuja creates a mask with one hole on the right eye's position and three zigzag lines on the left, with two lines at the mouth's position slanted downwards.

Due to her human and ghoul nature, Eto has a number of sides to her personality. As a ghoul, she has a sadistic personality, cutting off Shinohara's leg so that he could "match" with Juuzou's injuries and taunting Kurona and Nashiro about their parent's death. Her twisted personality is possibly the result of fighting to stay alive during her early years in the 24th ward.As a result,she has no qualms about remorselessly slaughtering humans and ghouls alike. Like many ghouls, she is able to compartmentalize her ghoul and human alter egos with relative ease. Since she doesn't see any value in human life, this indicates that she has a misanthropic view on humanity. Whether her views on humanity was a factor in her attacks on the CCG is still unknown. As Sen Takatsuki, Eto projects a childish air around her through her actions and overall demeanor. She appears to be quite ditzy at times, oversleeping on the day she was suppose to be signing books and taking photos with admirers when it was prohibited by her manager. Eto/One-Eyed Owl was born to Ukina and Yoshimura as a hybrid human and ghoul being. However, when Ukina was forcefully killed by Yoshimura under the orders of V, the child was hidden in the 24th ward in order to protect its frail life. As Eto grew up in the 24th ward, she came to hate the world and continued to survive; eventually, she became a half-kakuja due to the low human and high ghoul population ratio in the ward. In her youth, Eto first appeared to the CCG during their whack-a-mole hunts and killed Mado's wife as the latter covered for her comrades' retreat.

One day, Eto appeared for the first time and single-handedly killed a Special Class Investigator that was affiliated with the 3rd ward. Eto was assigned a S-rating and then given the nickname X. One month later, Eto executed a large-scale attack on CCG's 2nd ward branch office. The office was heavily damaged and CCG suffered numerous casualties. Eto's rating was increased to SS, and her nickname was changed to 'Owl', due to her plumage-like Kagune. After a report of Eto only having one kakugan, her nickname was again changed to 'One-Eyed Owl'.Afterwards, Eto and other ghouls attacked the Ghoul Detention Center in the 23rd ward. Eto's rating was upgraded to SSS. Later, Eto's faction attacked the 2nd ward for a second time. This time, First Class Investigator Kuroiwa dealt a lethal damage to Owl's kakuhou with his Quinque. However, Kuroiwa himself was seriously injured and could not participate in subsequent operations. Finally, Yoshimura, acting in his daughter's place, attacked the 2nd ward for a third time alone. CCG's team was unable to exterminate Yoshimura. However, the genius Rank 2 Investigator Arima used the Special Class Investigators' quinques as he went up against Yoshimura. Finally, he defeated Yoshimura, leading to CCG's victory. Yoshimura, fatally wounded, vanished after this day ten years ago.  Eto attended the meeting where Kaneki was brought before Tatara. At the end of the meeting, Tatara left the Aogiri hideout's affairs to Noro. Tatara predicted that the doves would come soon and ordered Noro to follow their plan. Then, Tatara left with Eto to meet comrades that were waiting for them.