Princess Fraw inhabits the Lacroa Kingdom within the Saddrac World, a realm where humans live alongside robot knights and magical beings, featured in the fantasy-themed SD Gundam Gaiden's "Lacroa Series" or "Siegzeon Arc". Her capture by the forces of darkness under Satan Gundam and the resurrected Emperor Sieg Zeon sparks the core quest of the first OVA, *SD Gundam Gaiden I: Lacroan Hero*. The amnesiac hero Knight Gundam must rescue her, driven by this classic fantasy trope within the SD Gundam parody style blending RPG elements.
Knight Gundam's mission to save Princess Fraw and recover a stolen stone tablet leads him across Lacroa, aided by companions Knight Amuro, Priest Guntank, Warrior Guncannon, and Forest Fairy GM Sniper Custom. This rescue drives the initial plot through escalating conflicts against Sieg Zeon's forces across the four OVAs. The Siegzeon Arc concludes in *SD Gundam Gaiden IV: Knight of Light* as Knight Amuro commands a united Gundam army into a dark parallel world to defeat Sieg Zeon, resolving the threat to Princess Fraw and Lacroa. Her role centers on motivating the heroes' quest throughout the SD Gundam Gaiden OVAs.