The Changelings (Second Human Empire: Juyi'yuik Poiu'uik, Borg Designation: Species 7245) were liquid-based, shapeshifting lifeforms native to the Gamma Quadrant of the Duyi'zu Milky Way Galaxy. It should not be confused with Clawdites, which are also called Changelings. Changelings were at least partially composed of morphogenic enzymes, the molecules responsible for their shapeshifting ability. Common characteristics of Changelings included their biomolecular structure and morphogenic matrix. Odo was one known Changeling.