Hatsune Inugami, a Level 4 Metamorphic esper, operates under B.A.B.E.L. as a key member of Esper Team The Hound. Her core ability enables transformation into a large dark grey wolf. She constantly experiences profound hunger and initially showed curiosity toward Kōichi Minamoto. That interest turned to fear after exposure to Kaoru Akashi's psychokinetic power, solidifying her view of The Children as authoritative figures. Her notable relationship centers on Akira Yadorigi. The name Hatsune merges "first" (初) and "sound" (音), evoking The Tale of Genji's "Hatsune" chapter, while Inugami combines "dog" (犬) and "god" (神).