Dr. Arinsu is a Glind from the Demon Realm and a power-hungry scientist who serves as a secondary antagonist in Dragon Ball DAIMA. She is the elder sister of Shin (Supreme Kai) and Degesu, making her a being of divine origin despite her morally corrupt nature. Her brilliant mind and mastery of demon realm science make her one of the most dangerous intellectuals in the Dragon Ball universe.

Arinsu schemes to take over the Demon Realm using her intelligence to cunningly manipulate events from behind the scenes. Her willingness to experiment on others and her complete lack of ethical boundaries make her a formidable villain who relies on brains rather than brute strength. As a character introduced in DAIMA, she expands the lore of the Demon Realm and provides a fresh antagonist whose threat comes from her calculating mind. Her connection to the Supreme Kai adds an intriguing family dynamic to the Dragon Ball multiverse.