Domain Qel, a domain controlled by the Yuuzhan Vong shaper caste, existed as one of the smaller shaper domains during the Yuuzhan Vong War in 26 ABY. Yuuzhan Vong inhabitants of this domain were identifiable by specific forehead markings, exemplified by the young shaper Tsun Qel. To expose the heretical Master Shaper Mezhan Kwaad, Qel infiltrated Kwaad's inner circle by pretending to be a fellow heretic to Nen Yim, Kwaad's apprentice, thus assisting the Master Shaper Yal Phaath in obtaining crucial evidence.
The 2001 novel The New Jedi Order: Edge of Victory I: Conquest, penned by Greg Keyes, marked the initial appearance of Domain Qel.