Ymojin was a senior female Lurmen resident residing on the planet of Qalydon. Upon the arrival of the Freemakers to the world, she guessed their arrival was related to an upcoming wedding. While the Lurmen initially mistook the Freemakers as agents of the Galactic Empire, they were eventually welcomed as guests. The Freemakers subsequently retrieved the Lurmen's kyber crystals from the Imperial officers known as Durpin and Plumestriker.
Ymojin made her home in a Lurmen village located on the world Qalydon, living alongside fellow villagers like Chief Biz, Elan, and their offspring, Maynar. When the Freemakers first came to their village, she posited that their arrival was for a marriage ceremony. The Lurmen's initial suspicion was that the Freemakers were affiliated with the Galactic Empire, as they sought the kyber crystals that the villagers used to connect with the Force. Despite a brief conflict, Kordi Freemaker successfully reassured them, proving they were not Imperials.
Later that evening, Chief Biz and Elan played host to the visitors from off-world. Shortly after, the Imperial officers Durpin and Plumestriker launched a raid on the village, seizing the villagers' kyber crystals. Rowan Freemaker and Maynar repelled the Imperials utilizing the laser cannons of their starship, the StarScavenger. Following the crash of the Imperials' Gozanti-class cruiser in the nearby mountains, the Freemakers embarked on a mission to recover the crystals from the Imperials, which earned them the respect of the Lurmen villagers.
Ymojin was a female Lurmen characterized by her gray fur, blue eyes, and white hair.
Ymojin's debut occurred in the LEGO Star Wars: The Freemaker Adventures Season Two episode titled "The Lost Crystals of Qalydon," which was initially broadcast on Disney XD on August 7, 2017. Her voice was provided by Pamela Adlon, who also lends her voice to Elan.