In the 2003 TV series, Jhanna is a female warrior elected by an alien people to partake in a duel with Moriah, their wicked ruler who Jhanna swore to defeat during election time. The winner would gain rulership, and the loser would die. Upon traveling to the place at which the battle would take place, the vessel of Jhanna was blasted into the atmosphere of the Earth, where it crashed in Northampton. Meeting and teaming up with the Ninja Turtles, she soon found herself confronted by Moriah and her enchanted henchmen. After defeating Moriah, Jhanna spared her life and marked her with a reminder of her defeat. She left Donatello her warrior braid and departed in the morning following the battle and winning of the election.
The circumstances under which Jhanna meets the Turtles and allied with them against Moriah corresponds to a large extent to her Mirage Comics template. However Jhanna's extraterrestrial origin has been emphasized even more clearly as her appearance is slightly altered by a change in her skin and hair color to blue, as opposed to how it appeared on the Mirage Studios cover, where she appeared more human-like.
One difference from the story is that she simply shames Moriah with a mark. Though in the 2003 TV series she puts Moriah in a stasis bubble and takes her back to their planet.