| HELEGYN | ATLAS |
| Created by Mark Waid and Barry Kitson |
 |
PLANETARY INFORMATION
Name: Helegyn
Space Sector: Unidentified
Galaxy: Milky Way
Sun(s): Yellow
Affiliations: United Planets (Earth-Prime universe)
First Appearance: Legion of Super-Heroes Vol. 5 #9 (October 2005): [No Title]
Creators: Mark Waid and Barry Kitson
HISTORY
- In the universe of Earth-Prime, the planet Helegyn is a mining world, supplying the United Planets liquid inertron. The planet features a thin atmosphere and does not revolve, so one side perpetually faces its unusually proximate sun while the dark side is ice cold.
- In 3005, Helegyn came under attack by Praetor Lemnos' advance strike force, Terror Firma. The Legion of Super-Heroes was able to repel the destroyers from the planet.