Yn was a planetary body situated in the Yn system located within the Inner Rim region, according to Legends continuity. In approximately 5300 BBY, the Jedi forces initiated an assault against an Imperial fortress during the battle of Yn. However, Tulak Hord, accompanied by Ortan Cela, Khem Val, and Veshikk Urk, successfully shattered the siege with their legion of dark side combatants. Hord and Khem Val then proceeded to consume the energies emanating from the deceased Force-users through the utilization of an age-old Sith ritual. Many years afterward, Wwebyls, a diminutive humanoid being, served as Yn's representative within the New Republic Senate.