Kozmo Sundrel IV, a student at Reena University, had a father who belonged to a noble family and was a male figure living in the High Republic Era. Around 396 BBY, Leyli Romero, another Reena University student who was spying for Elecia Zeveron's thief crew, shot Sundrel. However, he lived because of his Luzalite diamond medallion, a family keepsake. Following this event, he stated his intention to speak with his father regarding the creation of a prototype of the medallion that could withstand blaster fire.
The short story "The Queen's Bloom," penned by Zoraida Córdova and featured in the 2023 young-adult collection The High Republic: Tales of Light and Life, which is part of the larger Star Wars: The High Republic project spanning multiple media, included a reference to Kozmo Sundrel IV's father.