Iori Senge originates from the visual novel *Taishou Mebiusline* and its anime adaptation *Taishou Mebiusline: Chicchai-san*. He possesses a commanding height of 183 cm and a weight of 78 kg, distinguished by long violet hair and striking red eyes. He typically wears a military uniform and wields a sword as his signature weapon.

His personality blends refined intelligence with cold-hearted manipulation, frequently employing calculated violence. As a commander in the Imperial Japanese Army, he demonstrates bravery and loyalty while engaging in supernatural conflicts centered on creating undead soldiers. He interacts with coworkers through hypnotism, seduction, and flirting.

Within the narrative, Iori functions as an antagonist, specifically opposing the protagonist Kyoichiro Hiiragi; their dynamic is marked by tension and conflict, though official media suggests a relationship extending beyond simple rivalry. His military faction seeks to exploit supernatural forces, placing him in direct conflict with anti-government groups like the Five Katana.