Kandarian

I DID read your list. Mine's different: it doesn't include the Toa Mata and Dekar because they also have amnesia like the Metru Nui Matoran, non-sentient rahi like Kaa and Graalok are also highly unlikely since part of gathering information would require the GB to communicate with others (asking a question would take less time than hanging around a person and just hoping he will tell a piece of information to someone else), according to the OP it won't be someone created by the GB's themselves (Umbra, MoL, Bahrag, Orde), and finally: the Golden Skinned Being can't be the GB because storyline has shown us that beings joining in a fusion lose their identity for the duration of the fusion so the GB wouldn't know who he was.

Hi, for anyone interested here is the list I made of all characters that are still a possible choice for the GB, the other characters were eliminated using the first post made by Erebus (named, still living, on Spherus Magna, not made by the GB's themselves, not mind-wiped and not a character already disproven by GregF). I also think it can't be any of the surviving Piraka because their consciousness is gone as long as they are in the fusion and it can't be the fusion because he's only been created recently and Orde stated that the GB has been observing for a long time. Finally, some Dark Hunters are highlighted in red because, if you take the rule that the character has to be named literally, they are only known by a codename.