Po Bidau Gustang

Po Biduh Gustang is the head of the Biduh Family, and is one of the 10 Great Warriors. He was the first living being to systematically record Shinsoo. Called the "one who knows the most about the Tower". The males of his family are selected to be part of the 'Research Association' (Similar to how Koon's family chooses amongst its children, those who are not chosen are disowned and kicked out). Father of Eurasia Enne Zahard. Has an extremely bad relationship with Eurasia Blossom.

Powers and Abilities
Being one of the 10 Great Warriors, he is incredibly powerful. Since he is the first living being to systematically record Shinsoo, he must have immense control over Shinsoo. A genius in using Shinsoo as support in battle.