Cosette is a fictional character in the 1862 novel Les Misérables by Victor Hugo and in the many adaptations of the story for stage, film, and television. Her birth name, Euphrasie, is only mentioned briefly. As the orphaned child of an unmarried mother deserted by her father, Hugo never gives her a surname. In the course of the novel, she is mistakenly identified as Ursule, Lark, or Mademoiselle Lanoire.

Javert, no first name given in the source novel, is a fictional character and a main antagonist of Victor Hugo's 1862 novel Les Misérables. He was presumably born in 1780 and died on June 7, 1832. First a prison guard, and then a police inspector, his character is defined by his legalist tendencies, authoritarian worldview, and lack of empathy for criminals of all forms. In the novel, he persecutes the protagonist Jean Valjean after his violation of parole and theft from the child Petit Gervais.