Daynaal was a male Trandoshan who existed during the High Republic Era. Sellaccc Orryak, the pirate leader of the Ganguls, was his aunt. Although Daynaal was hesitant, Orryak attempted to train him in piracy by tasking him with aiding her in disrupting the Life Day celebrations of the Wookiees residing on the planet Kashyyyk. After the Ganguls destroyed a shuttle that was transporting food for the Life Day feast, Orryak instructed Daynaal to move the provisions. Kai Brightstar, Lys Solay, and Nubs, who were Jedi Initiates, along with Johgeshakka, a Wookiee whose brother Rudi (the pilot of the starship) had been taken prisoner by Orryak, pursued Daynaal to the Ganguls' shuttle. The Jedi were captured by the Ganguls, but Daynaal released them as Orryak and the other pirates left to cut down the Life Day tree. Daynaal and Rudi gathered Wookiees to assist the Jedi in their attempt to stop the pirates, which caused Orryak and the Ganguls to run away. Subsequently, the Wookiees invited Daynaal to participate in the Life Day celebration.
Daynaal made an appearance in "The Missing Life Day Feast," the initial segment of the ninth episode of the animated series Star Wars: Young Jedi Adventures' second season. Judd Goodstein provided his voice in the episode, which was broadcast alongside the first half of the season on August 14, 2024.