Doing It for the Art: In order to keep his vehicles and rooms consistent from panel to panel, Baldwin makes computer models of all of them. Even the ones that Baldwin initially intended to use for only one page, like Pierrot's hoverbike.
What Could Have Been: For the scene where Yuri arrives on Carpsellon as a self-styled goddess of death, Baldwin had initially planned for her to have blue skin, so she would look more like a Hindu deity. (Martina's offhand comment about Yuri turning herself into "a blue cat" appears to be foreshadowing of this point.) Baldwin abandoned this idea when he realized this would make her look too much like an alien from Avatar—so Yuri ended up with red skin and tiger-ish stripes instead.