Joy

"You should not of brought him before us." "Oh, nonsense. He is full of the Force. Can you not feel it?"

- Anger and Joy argue about Yoda's presence

Joy was one of five Force Priestesses who had sustained their consciousness in the Fore after death and dwelt inside the Force planet. She manifested as a being wearing a black robe and a cheerful mask, and acted in a manner befitting the emotional aspect she represented. When Jedi Grand Master Yoda came to the planet seeking immortality, she and the other priestesses set him a series of challenges to prove he was worthy of the "great gift". Yoda passed each of their tests, eventually traveling to the Sith homeworld Moraband where his final test&mdash;facing Sith Lords Darth Sidious and Count Dooku&mdash;was out of Joy and the other priestess control. Yoda succeeded, and the priestess informed him that the spirit of his old friend Qui-Gon Jinn would commune with him to teach him the ways of manifesting in the Force after death.

Biography
"For we are Confusion&hellip;" "Anger&hellip;" "Saddness&hellip;" "Joy&hellip;" "And Serenity."

- The five Force Priestesses identify themselves Joy was one of five Force Priestess who died but was able to manifest herself in the Force after death, existing between realms. She and the other priestesses&mdash;Serenity, Sadness, Anger and Confusion&mdash; manifested themselves inside the Force planet at the center of the the galaxy. There they watched all beings strong in the Force from their home. During the Clone Wars between the Galactic Republic and the Confederacy of Independent Systems, Jedi Grand Master Yoda sought out the Force planet to learn how to survive death on the advice of his deceased friend Qui-Gon Jinn, another who had manifested in the Force after death. Serenity was the first to greet the Grand Master, informing him that he was late and that the priestess had been waiting for him. She led Yoda to a gathering room where the other priestesses manifested around him. Each of the priestesses reacted to Yoda in a manner befitting the emotion they represented, with Joy expressing the belief that the Grand Master had the ability to succeed in learning to sustain his consciousness after death. Serenity then asked for the blessing of the other priestesses and the five joined hands, beginning to rapidly spin around Yoda and becoming a blinding blur that transported him to elsewhere within the planet, where Serenity would begin his testing.

The Grand Master was successful in his first test, overcoming his fears, after which Joy and the other priestess manifested behind Serenity as she claimed Yoda must trust in their teachings to succeed. The priestess then directed him to pass through the Valley of Extinction, warning him that he must do so without emotion otherwise he would see their faces and be seduced. Yoda was successful in resisting the temptation and made it to the other side of the valley. There Joy, Anger, Sadness and Confusion set his final test, traveling to the Sith homeworld of Moraband to face his greatest fears. Once their challenge was set, they de-manifested, causing their robes and masks to fall to the ground.

On Morriban, Yoda was confronted by spectre of the Sith Lord Darth Bane who tried to tempt him to the Dark side but was unsuccessful. Joy and the other priestess then manifested before Yoda, warning him that while all his previous trials have been conjured by them, the final test was out of their control. Yoda was to enter a chamber of darkness where the Sith once sacrificed Jedi, and where he would have to face the Sith of his time, Darth Sidious and Count Dooku. The five then faded away, leaving the Grand Master alone for his final challenge. Yoda faced the Sith, and emerged from the chamber, where he was informed by Serenity that Jinn would commune with him and train him to become immortal.

Personality and traits
"He will disappoint us. He will disappoint himself." "Oh, no. No, I do not see that."

- Sadness and Joy speak in manners befitting their aspects

Joy and the other four priestess, who referred to each other as cousins, embodied the connection between the Living Force found in lifeforms and the greater Cosmic Force. Her form was mutable, but she manifested as a gray-skinned]], aspect of the emotion joy, with yellow eyes. Her manifestation wore a black robe and a white smiling mask.

When interacting with Yoda, Joy acted in a cheerful manner which suited the aspect she represented. After Serenity brought Yoda before the priestess, Joy was pleased to see him, claiming he was full in the Force and telling Anger that it was nonsense that the Jedi should not of been brought before them. She believed that Yoda would be successful in learning to manifest in the Force after death, but still laughed when Anger pointed out that he should not be scared as he did not know what it was he had to face.

Behind the scenes
"I don't want to ruin any greater mystery of this whole thing for you, but the way that I reconcile what that being is, is that it's actually one being. It's one ancient being separated over time that for our perception to be able to see her, she is these many different iconic things to us."

- Dave Filoni

Joy and the other Force Priestesses were created for Destiny and Sacrifice, two episodes of the sixth season of Star Wars: The Clone Wars. After the two episodes had been completed but before they aired, the television series was cancelled; however, all of the episodes which had been completed for the sixth season were released in 2014 under the title The Clone Wars: The Lost Missions on Netflix.

Joy, like the other priestesses, was voiced by Jaime King, who recorded the dialogue while swapping between all five voices, except for some specific sound clips like laughs. In a Q&A session on the Lost Missions, Clone Wars series director Dave Filoni said that he considered the five Force Priestesses to be one being who had died and become a Force ghost, splitting over time and existing in the Force with a limited power to manifest themselves. He also said that the priestess did not exist on the terms of good or evil.