Tyko Thul, a male Human, was the sibling of Bornan Thul, specifically the younger brother. Using his portion of the family's wealth, he acquired and operated the [droid](/article/droid/legends] manufacturing plant located on Mechis III. It was there that he discovered the deactivated chassis of the [IG-88A](/article/ig-88a/legends] unit, which he then had repaired and repurposed to serve as his personal protector. He orchestrated a fake kidnapping, making it appear as though IG-88 had taken him, all in order to draw his brother into a vulnerable position.
Following the conclusion of the Yuuzhan Vong War, he assisted Aryn, his sister-in-law, with the regular operational tasks of Bornaryn Trading.