The Defender was a role in traditional challenge by personal combat in Guiteica.
The challenge included two individual fighters attacking each other with dematoils. The Succession Judge was to be a neutral observer. Each fighter was allowed to have a Defender, traditionally used to avoid uninvited interruptions of the battle, but more commonly used to verify that the battle was kept honorably.
Aul Tarrus Vishav was Quaal Tavier Catharius's Defender when Catharius fougth his enemy Jael Ganton Farvash