Niko debuted in the first issue of the Runaways comic in July of 2003. Like the other Runaways, Niko is the daughter of villains involved in organized crime that refer to themselves as "The Pride;" in her case, her parents were dark sorcerers. When she discovers this, she runs away, but later discovers that she has inherited her parents' sorcery. Whenever Niko bleeds, a magic staff called the Staff of One emerges from her chest, allowing her to bend magic to her will. Niko uses her powers to make up for her parents' villainy and to prevent The Pride from having a place at the top of Los Angeles organized crime. Her trademark is her elaborate, ornate gothic wardrobe.