Layla Destiny Shura, also known by the alternative romanization Shula, holds the position of Supreme Commander within the Galaxy Railways Administration Bureau. She exercises comprehensive authority over all bureau operations, including command of the Space Defense Force (SDF) and Space Panzer Grenadiers (SPG). Her responsibilities encompass managing the vast interplanetary train networks and safeguarding passengers from diverse threats like meteor storms, terrorist attacks, and hostile alien encounters.

Originating as one of the primordial cosmic forces born during the Big Bang alongside Miraizer, she possesses deep mythological significance within the Leijiverse cosmology, establishing her existence as foundational to the universe's structure. Throughout the series, she maintains her central command role during critical events, such as the Sirius Platoon's mission through a dimensional fault line to rescue a stranded train and combat the rogue tunneling machine called the "Demonic Machine" on planet Fatom. Her strategic directives consistently support SDF efforts to contain galactic threats, though she operates primarily from headquarters rather than the front lines.

In the OVA *A Letter from the Abandoned Planet*, she oversees operations concerning the Galaxy Express 999's crash on the forbidden planet Herise and directs the Sirius Platoon's assistance mission. Her personal origins, age, and background remain undisclosed beyond her title and mythological ties. Her portrayal across all media consistently focuses on her administrative and strategic functions within the Galaxy Railways hierarchy.