Leano is a recurring character from the anime Beastars. She is the mother of Legoshi and the daughter of Gosha and Toki. Leano was a half-gray wolf and half-Komodo dragon hybrid. In her youth, she was renowned for her beauty, which closely resembled that of her mother, and she was widely perceived as a purebred wolf. However, around the age of nineteen, she began to notice Komodo dragon scales spreading across her back, a manifestation of her paternal genes. This caused her increasing distress, as she feared being discovered as a hybrid in a society where such mixed heritage carried heavy stigma.

To cope, Leano became very careful about controlling her personality and behavior. She studied typical canine mannerisms and consciously acted sociable, affable, and earnest in public. Behind this facade, she hid her naturally reserved and poker-faced temperament, which she associated with her reptilian heritage. Her primary motivation was to protect her son Legoshi from the shame and social rejection she herself faced, and to give him the best possible chance at a normal life. This drove her to isolate herself from others, eventually barricading herself in her room and interacting with Legoshi only through a small hole in her door. Unable to bear her inner turmoil and fear of exposing her hybrid nature, she ultimately took her own life while Legoshi was still a child.

In the story, Leano appears primarily through Legoshi's memories and as a spirit during his out-of-body experience after a severe injury. Her role is crucial in explaining Legoshi's own hybrid background, his conflicted feelings about his identity, and the deep trauma that shapes his personality. Her relationship with her father Gosha was strained, as Gosha became distant after Toki's death, and Leano distanced herself from him to avoid further complications. Her connection with her son is the emotional core of her character: her suicide leaves Legoshi with lingering guilt and questions, but also eventually helps him come to terms with his heritage and find his own path. Notable abilities are not a defining aspect of Leano, as her significance lies in her personal tragedy and its impact on the main narrative rather than any special skills. Her development is primarily conveyed through the revelation of her past and the reconciliation Legoshi seeks with her memory.