Loki %C3%9Atgar%C3%B0a

He is a true member of GREMLIN introduced in the series that was sent to watch over Baggage City for Othinus' experiment that was to take place there. He wears suit over a checkered waistcoat and a dress shirt, which he opens at the top. He has long messy blond hair, which matches his blue eyes. He is described as someone who looks frivolous.

(Source: Toaru Majutsu no Index Wiki)