Lyonie was a Gungan who served as a Boss of the Gungan people during the Clone Wars. He was one of the best. During the unrest on Dac, Jedi Master Yoda contacted Boss Lyonie to request the Gungan Army as reinforcements for the ongoing battle on Dac. Although Lyonie was initially hesitant, Representative Jar Jar Binks convinced him that helping Senator Padmé Amidala—who had been trapped on Dac by the Confederacy of Independent Systems alongside the beleaguered Galactic Republic troops—was of the utmost importance and urgency. Boss Lyonie was later stabbed by Rish Loo, prompting Jar Jar to pose as the Gungan boss (due to their uncanny likeness) while Lyonie recovered.
- In a question video by Dave Filoni, Filoni explained why Boss Nass was not boss because Lucas wanted a story of people mistaking Jar Jar for the Gungan leader.