Elucia de Lute Ima (エリュシア・デ・ルート・イーマ, Eryushia De Rūto Īma), more commonly referred to as Elsie (エルシィ, Erushī), is the deuteragonist of The World God Only Knows. She is a New Devil from New Hell and is an agent of the Runaway Spirit Squad, an organization of New Hell Devils whose purpose is to capture actively dangerous souls.
At the end of the story's, Elsie later officially became part of Katsuragi's family and changed her name into Eri Katsuragi.