Leika Chan, alias Theta, hails from Velga, a planet within an advanced extraterrestrial society. Once a strategic ally of Emperor Tathagata Killer of the Godom Empire, she supplied her civilization’s cutting-edge technology under the guise of fostering global peace and securing refuge for her species. This exchange accelerated the empire’s militarized dominance, enabling swift conquests across Earth.

Her allegiance fractured upon meeting Sho Shishimaru, the prophesied reincarnated Savior, and witnessing Tathagata’s unchecked savagery—culminating in Sho’s televised execution. In defiance, she unveiled her celestial alien form, invoking the Earth’s deity to resurrect Sho, reigniting worldwide hope and cementing her turn against the empire.

Compelled by Tathagata to trigger the "Ultimate Weapon of Destruction," a mechanism designed to obliterate Earth’s core, she reluctantly activated its countdown before thwarting the emperor with a luminous bracelet. This diversion allowed Sho and spiritual allies to battle Tathagata’s demonic manifestation. The weapon’s unleashed devastation ravaged the planet until collective human resolve and divine forces neutralized it.

Post-conflict, she surrendered her alien innovations to Sho, supporting his vision to unite humanity and the spirit realm. A symbolic kiss with Sho affirmed their pact. Though referenced as "Princess Theta," her royal lineage and her species’ search for a homeland remain unresolved threads in her narrative.

Her evolution from imperial collaborator to redeemed revolutionary hinges on ethical reckoning and defiance of oppression. Central traits include her technological mastery, resurrection abilities, and role as a mediator between worlds, though her post-war endeavors and origins remain unexplored in extant records.