Tjulan Kwaad was a Master Shaper of the Yuuzhan Vong, the head of Domain Kwaad, and the lord of Domain Yim. However, his domains suffered humiliation by events that occurred on the moon Yavin 4 in 26 ABY. One of the Master Shaper's subordinates, Mezhan Kwaad, and her respective adept, Nen Yim, committed heresy by violating the sacred laws governing the shaper caste and utilizing unorthodox methods in their biological experimentation. To his chagrin, Kwaad's domains subsequently fell into disrepute, and, when Yim contacted him later that year to ask for aid, Kwaad was unwilling to help her. Only a short time after Yin's plea, however, Kwaad sent Master Shaper Kae Kwaad to her aid.