Jaune Arc is a character in RWBY. He is a Huntsman, a former student at the now defunct Beacon Academy, a member of the now inactive Team RNJR and the leader of the remaining members of Team JNPR. His weapon of choice is Crocea Mors, which consists of a sword and a sheath that can expand into a shield. The weapon was handed down in his family from his great-great-grandfather, who used it to fight in the Great War.

He makes his first appearance towards the end of the first episode, "Ruby Rose", throwing up in the Vale Airship. There, he earned the nickname "Vomit Boy" from Ruby Rose.

In "The Final Word", he was unable to escape the Central Location as it dissolved, leading him to fall into the void and find himself in the Ever After.

After picking a stopwatch fruit in "Confessions Within Cumulonimbus Clouds", Jaune was sent back in time and aged many years, becoming known as the Rusted Knight from the fairy tale The Girl Who Fell Through the World and taming a Jackalope he named Juniper.

In “Of Solitude and Self”, he was reverted to his original age by the spirit of Alyx as a final gift to her old friend. Afterwards, he and Team RWBY return to Remnant where they arrive at the Kingdom of Vacuo.