Clone pilots Hawk and Odd Ball underwent redesigns for this episode, though they are not clearly seen in the final.

As tribute to the young Twi'lek girl he met on Ryloth in "Innocents of Ryloth," Waxer has a cartoon of young Numa on his helmet.

A detailed wedge of Umbara arc landscape was designed in this illustration by Tara Rueping. It tracks the progress of Krell's 501st across the fens, ridge and hills seen in Episode 325 ("Darkness on Umbara"), through the steep grade of Episode 326 ("the General") and includes the airbase perimeter in Episode 402 ("The General"). Note that these are production numbers, not air numbers.

An entire Umbara alphabet was designed for use in these episodes. Illustration by Chris Glenn.

Pong Krell lightsaber design introduces something new to the Jedi arsenal. Though double-ended lightsabers had been seen before -- most famously wielded by Darth Maul -- Krell's are hinged, allowing him to more easily stow them on his belt.