Lori is one of two identical twin sisters working at the Photon Power Laboratory. She possesses wavy, shoulder-length blonde hair, specifically lighter than her sister Loru's. Lori consistently wears light blue clothing, contrasting with Loru's pink attire. Both twins have voluptuous physiques that attract attention from male characters like Koji Kabuto, Shiro Kabuto, and Boss.

Beyond their lab duties, the twins are skilled pilots. Lori demonstrates agility driving a limousine during an ambush by Baron Ashura and the Ashura Corps, maneuvering to ensure Professor Yumi escapes after their car is forced off the road and explodes. When an imposter poses as Professor Yumi, Loru identifies inconsistencies, specifically noting the false claim that Lori was absent due to work, helping expose the deception.

Lori exhibits flirtatious behavior. At the beach, she requests Koji apply tanning oil to her body, causing visible jealousy in Sayaka Yumi. Later, alongside Loru, she offers to apply oil to Shiro Kabuto and allows him to reciprocate, resulting in Koji's envy upon their return.

An English dub adaptation presents an alternative origin, suggesting Professor Yumi rebuilt Lori and Loru from two Gamia Q triplets, reprogramming them as his assistants.

In *Mazinkaiser vs The Great General of Darkness*, Lori and Loru jointly pilot the combat robot Million Alpha from control seats within its chest. Confronting General Birdler's flying fortress Mikeros, they execute a self-sacrificial maneuver, ramming Birdler into the vessel and triggering a self-destruct sequence. This action results in their deaths via crushing within the cockpit during the collision. Following the Mycenae Empire's defeat, memorial tombstones are erected for Lori and Loru alongside Dr. Morimori, with surviving characters attending a service and laying flowers.