Kaylia: Space Avenger

, alternately known as Disney's , was an American animated adventure-science fiction-comedy television series, being created by Chris Sanders. It was produced by Walt Disney Television Animation and it aired on Disney Channel from February 27th, 2004 until January 21st, 2011, with reruns starting to air on Disney XD in 2009.

Synopsis
An alien princess gets kidnapped by Space Pirates, becoming raised by them, using her new piraty skills to hunt a villainous threat.

Main

 * Princess Kaylia (voiced by Janice Kawaye) - an adventurous but sometimes lazy space princess who was raised by pirates, being now a powerful pirate.
 * Jo (voiced by Benjamin Diskin) - a rather shy member of Captain Mars' crew who aids Kaylia, eventually falling in love with her.

Supporting

 * Captain Mars (voiced by John DiMaggio) - a brave and cunning pirate who raised Kaylia, often trying to scheme other people to gain cash.
 * The Parrot (voiced by Harry Shearer) - Captain Mars' talking parrot who likes to annoy him.
 * Trior (voiced by Grey DeLisle) - Captain Mars' tomboyish second-in-command who is secretly a girl, being a shady figure and a close friend to Kaylia, often giving her advice about TBD.
 * Sharkbait (voiced by Rob Paulsen) - a clumsy member of Captain Mars' crew who seeks for wealth and fame, being one of the few people to know that Trior is a girl, being in love with her.
 * Hank (voiced by until his death in 2006 and Greg Baldwin afterwards) - an ancient wizard who is Captain Mars' old friend and ends up to mentor Kaylia in order to be the best.
 * The Oracle (voiced by Eartha Kitt until her death in 2008 and Cree Summer afterwards) - a short-tempered and blind old woman who can see into the future.
 * Zeke (voiced by John Kassir) - a bartender who likes his job, being often visited by Captain Mars and his crew.
 * King Claude and Queen Lilia (voiced by Eric Bauza and Lauren Tom, respectively) - Kaylia's parents and the rulers of Galctopus who originally despised Captain Mars for their daughter's kidnapping, but eventually grew some respect for him, since he saved their lives.
 * Scarletté (voiced by Andrea Baker) - an old flame of Captain Mars who is now a far more competent pirate and is now TBD.
 * The Lotus Twins (voiced by Kaley Cuoco and Linda Cardellini, respectively) - two flower-like twins who sell flowers.
 * Curtis Morch (voiced by Brian Doyle-Murray) - Captain Mars' uncle who is a feared pirate.
 * Princess Jen (voiced by Mae Whitman) - Kaylia and Jo's daughter in a possible future who is raised as both a princess and a pirate.
 * Princess Jen (voiced by Mae Whitman) - Kaylia and Jo's daughter in a possible future who is raised as both a princess and a pirate.

Antagonists

 * Captain Creepybeard (voiced by Dwight Schultz) - a rival to Captain Mars who wants to outmatch him as the greatest pirate in the universe.
 * Crazy Jane (voiced by Kat Cressida) - Creepybeard's insane daughter who TBD.
 * The Siren (voiced by Megan Fahlenbock) - a mysterious being who wants to conquer the planets by using her looks.
 * Robo Mark (voiced by Paul Rugg) - a robot designed to TBD.
 * Fire and Toxin (voiced by Patrick Warburton and Tom Kenny, respectively) - two idiotic mercenaries who are TBD.
 * The Cernomic (voiced by Roger L. Jackson) - a mythical dragon who loves to cause havoc and TBD.

Episodes
See List of Kaylia: Space Avenger episodes.

Crossover episodes

 * /Stitch and Kaylia/ (crossover with Lilo & Stitch: The Series, aired on [Q1/Q2/Q3/Q4] 2005)
 * /Possible/ (crossover with Kim Possible, aired on TBD 2006)
 * TBD (crossover with Phineas and Ferb, aired on TBD 2010)

Post-series finale

 * TBD (crossover with Star vs. the Forces of Evil, aired on TBD 2018)
 * The Tale of Two Princesses (crossover with Sapphire: Medieval Warrior, aired on TBD 2022)

Trivia

 * This is currently one of the longest-running Disney animated series.
 * Kaylia is the first Disney Princess from alien origins, later followed by Star Butterfly from Star vs. the Forces of Evil.
 * Like Star, Kaylia has a humanoid appearance and has somehow an Asian-like ethnicity as an influence from her voice actress.
 * It's hinted that Kaylia: Space Avenger and Sapphire: Medieval Warrior share the same multiverse, since both are created by Chris Sanders and have a similar format.
 * This theory was later confirmed to be true in the crossover.