Bo (nickname for birth name "Ysabeau")[2][3][4][5] is the protagonist of Lost Girl, the Canadian supernatural drama television series that premiered on Showcase on September 12, 2010, and ran for five seasons.
Throughout the first season, Bo learns more about the Fae world and her supernatural nature, while searching for information about her origins.
Along the way, Bo also develops romantic relationships with both Dyson, a Light Fae wolf-shapeshifter and police detective in the human police force; and Lauren, a human doctor and scientist in servitude to the Light Fae.
[16] Bo is a succubus who grew up in an adopted human family, unaware of her non-human nature and of the Fae world she descended from.
In "Raging Fae", she told Kenzi that she began to feel "different" when she entered puberty and didn't know she was not normal until she accidentally killed her high school boyfriend by draining his life energy during her first sexual activity.