Antos Wyrik is the one who discovered Arca Jeth's robe.
These robes once belonged to Arca Jeth, who was an Arkanian Jedi Master that trained Ulic Qel-Droma. Jeth met his end during the Great Sith War. Following Jeth's death, Qel-Droma acquired the robe and kept it with him at all times. When worn, the robes granted the wearer greater wisdom and improved their ability to replenish themselves within the Force.
The Mandalorian scientist Antos Wyrick pilfered Jeth's robe from Qel-Droma. Wyrick then utilized genetic material from the robe to cultivate Offshoot children. These children were enhanced with Jeth's genetic makeup and Force-sensitivity. Rohlan Dyre, a Mandalorian warrior, uncovered the robe's past and its function in Wyrick's project while investigating Demagol's history. He later recounted this information to Zayne Carrick, a rogue Jedi.