A similar entry appears in the Wheel of Time Companion confirming the information available in the main story arc.
Author: Estyrien al'Halien
Varek is an under-lieutenant in the Seanchan army.
During Rand's attack on the Seanchan army in Altara, Varek was given a message to take to Banner-General Chianmai. He found Chianmai only to discover that he was dead. Varek took control of Chianmai's soldiers and began the retreat ordered by Captain-General Miraj.
Varek was at Falme.
He is skinny.
(Reference: The Path of Daggers, Chapter 24)