In one version of the script, Mas Amedda was in the executive office with Chancellor Palpatine. In the final, it is Orn Free Taa, taking advantage of his pre-existing character model.

Among the Senators held hostage are Riyo Chuchi of Pantora; Onaconda Farr of Rodia; Jakker-Sun the Ithorian; Dantum Roohd, a character based on a costume design used by Giddean Danu in Episode III; Zinn Paulness , a character based on a design of an Alderaanian aide in Episode III; and an unnamed Christophsian Senator.

As Shahan Alama searches for Skywalker, he comes across a startled "Betty Droid," a BD-3000 luxury droid model first seen in Episode III whose design was partly inspired by Bettie Page.

Throughout the script, Robonino was simply referred to as "fish guy." He is based on an unused Iain McCaig concept for an alien Jedi.

It appears that Robonino may be a New England Patriots fan. His pack says "Patsfan" in Aurebesh.