Biology and appearance
Outwardly, Zelosians were nearly identical to Humans in height, build, hair and skin pigmentation, and their ability to grow facial hair. Because of this, Zelosians could keep their origins a closely guarded secret and were commonly misidentified as Near-Humans by outsiders. While their resemblance to humans had been suggested by some as a spectacular form of naturally evolved mimicry, many Zelosian biologists believed that their species was the product of genetic engineering, though there was no direct evidence to support this. Thus, unlike many true Near-Humans, Zelosians were not known to be able to interbreed with any other humanoid race.
Because of their unusual ancestry, Zelosians possessed a number of plant-like characteristics. Their blood was a green chlorophyllic sap. Additionally, a large portion of the muscles of Zelosians were cellulose fibers, with some form of nastic response apparently being involved in their reflexes. Zelosians still consumed vegetable and animal product-based foods, but could also photosynthesize through their skin. Celot Ratua Dil believed that he could survive one to two months on only sunlight and water.
All Zelosians possessed emerald-green eyes. They were also night-blind, being unable to see whatsoever in light dimmer than that provided by a full moon. This meant that they stayed indoors after sunset and held many superstitions about the night (although their suspicions about zombies proved to be somewhat true, being actually caused by corpses reanimated by parasitic worms known as jumpers).
Culture and history
Zelos II was subjugated by the Galactic Empire for ore mining, but the Zelosians were kept ignorant that the mining work they did supported the Imperial war machine. After the Battle of Endor, the Zelosians believed the Imperial military had abandoned Zelos II, not knowing of a hidden base in the Valley of Umbra; the New Republic sent in forces to take out the base, but walked into an ambush. In the wake of the seeming Imperial abandonment of the planet, Zelosian Galleros Nul declared martial law, making himself Mandated Commander of the People of Zelos. When the Imperial presence on Zelos II was exposed by Jai Raventhorn, Nul disavowed the Empire entirely and petitioned entrance for his world to the New Republic.
- The Old Republic: Fatal Alliance
- The Old Republic: Fatal Alliance audiobook
- (Mentioned only)
- Death Star
- Gathering Shadows
- "Day of the Sepulchral Night"—Star Wars Adventure Journal 13 (First appearance)
- "Special Ops: Ship Jackers"—Star Wars Adventure Journal 13
- Children of the Jedi (Mentioned only)
- Planets of the Galaxy, Volume Two (First mentioned)
- The Star Wars Planets Collection
- Alien Encounters
- Vader: The Ultimate Guide
- Jedi vs. Sith: The Essential Guide to the Force
- The Complete Star Wars Encyclopedia
- The Essential Reader's Companion
- The Bounty Hunter Code: From the Files of Boba Fett