Joxer is a comical warrior, and styles himself "Joxer the Mighty".  The second son of a warlord and a musician, Joxer tries to prove himself to others as a mercenary warrior. But no one, not even Xena, would accept him into their group. At first he tries to serve the evil warlord Callisto (in 'Callisto') and is sent to kidnap Xena's companion, Gabrielle. He fails, and both he and Gabrielle are captured by Callisto, and then rescued by Xena. This rescue, and his infatuation with Gabrielle, precipitate his joining the forces of good.

He decides that he wants to help people and 'do good', and travels around the villages enthusiastically offering his services. But Joxer's ideas of being a fierce, super-sexy warrior exist only in his fantasies. In reality he is foolish, klutzy and usually outclassed, but often very lucky and very funny. These qualities can be endearing (in small quantities!), and his real quality is as a charmer: he can befriend almost anyone he chooses. He frequently gets himself into fatal situations, and in desperation, talks his way out of them; several times he tries to bring peace to warring families; on many occasions, he proves useful to Xena in winning people over.

Joxer appeared again in the comedy 'When the Bell Tolls', when Aphrodite (Goddess of Love) cast a spell on him to turn him into a romantic, exceptionally talented swordsman with irresistable sex appeal. He was able, for one episode, to be the type of person that he had always wanted to be.

As time went on, Joxer became a loyal and good friend to Xena and Gabrielle. It was probably his love for Gabrielle that sustained Joxer in his delusions; but he kept it a secret, and she was sometimes very mean to him, generating more sympathy from the viewer.

After the season 3 cliffhanger (in 'Sacrifice 2'), when Gabrielle plunged to her death in the lava pit, it was Joxer who mourned her by dropping daisies (her favourite flower) into the pit every day.

After the season 4 cliffhanger (in 'Ides of March'), when Xena and Gabrielle were crucified by Julius Caesar, Joxer persuades Amarice and Eli to return their bodies to their home towns in Greece.

In season 5, when Xena and Gabrielle faked their deaths (in 'Looking Death in the Eye'), Joxer searched in vain for their bodies for a long time. Twenty-five years later we see a much older and wearier Joxer married to the ex-harlot Meg. They run a tavern dedicated to the "Warrior Princess and the Battling Bard", where they bicker unhappily; and against her wishes, we see him spending their life's savings on one of Gabrielle's scrolls. They have three children - two boys and a girl - who he dotes on. His eldest boy is Virgil, the famous warrior poet.

Discovering that Xena and Gabrielle are alive, his eyes light up and he is again filled with youthful enthusiasm. Joxer and Virgil travel with them in search of Eve, Xena's daughter. They discover that Eve is now known as "Livia, the Tyrant of Rome" - an awesome warrior with many of Xena's skills. They fight her, but now Joxer is old and slow. During the fight he charges at Livia to save Gabrielle, and Livia brutally kills him.

Joxer has 2 brothers, and he avoids both of them -

Jett, an uncouth, ruthless assassin who would sell his own grandmother. Jett bullies Joxer in what he thinks of as brotherly affection, but this irritates and demeans Joxer.

Jace, an extremely camp and extravagant singer of popular music, who wears brightly coloured clothes and cultivates an Italian accent. Joxer can't bear to be associated with him, and pretends he doesn't exist.