Mystogan

Japanese name:

ミストガン

Mystogan is extremely reclusive, fully cloaking every part of his body, and using sleeping spells while visiting the guild. He helps the guild from the background in most occasions, though he directly faces Laxus during his coup. He looks exactly like Jellal, though he states that he is not Jellal, but does know of him. In actuality, he is Jellal's Edolas counterpart.

Wikipedia