Unnamed Interrogator

The Unnamed Interrogator (其の質問者) is an agent of the Magic Council. His actual duties and rank are unknown, but for now, he has been seen interrogating a future Mikado Ryūgamine nearly 8 years ahead of the current story, trying to get information from the man's past in order to learn the secrets of a destructive event that now threatens the world.

Fairy Tail: There and Back Again

 * Stains of Time (Future)

Trivia

 * His profile picture belongs to Zanpakuto Leader.