The Zel system, also called the Zeltros system, was a five-planet star system that contained the planet of Zeltros. A battle of the Mandalorian Wars was fought here as a part of Mandalorian Triumph.
- "One of a Kind"—Star Wars: Clone Wars Adventures Volume 8 (Appears in flashback(s))
- Legacy 43: Monster, Part 1
- (First mentioned)
- The Essential Atlas (First identified as Zeltros system)