Sylvia Romano is the daughter of Giorgio and Maria Romano and the first human that Arthur and Will Denison meet on Dinotopia. She worked with her parents at the Hatchery, but met the Denisons again in Treetown, a reunion which Arthur suspected that she and Will had planned. She and Will later won the youth games at Treetown, and Brokehorn offered them the first choice of which habitat they would like to train for. Both answered "the sky" and were thus sent to Canyon City to train as Skybax Riders. Sylvia was paired with a Skybax named Nimbus.