M

M is the current Athena. Only S Rank owls are permitted to see the Athena and only they have seen his face. The identity of the Athena has never been released at any point in history.

M is known to be a physicist, a trillionaire and, as the Athena, the current holder of project TALON's activation codes.

Like any S Rank or higher Owl, it is presumed M is immortal due to project LAZARUS. Current guesses at his date of birth among lower rank owls range between 1990 and 2010.

Void:
After the betrayal of an unnamed and now deceased S Rank owl, it was revealed to lower ranking owls that M gained his wealth and influence as a secret advisor to the CEO of Void and is revealed as the real mind behind the company advancements. This also means that, even without the aid of the court, M is in a position of ultimate power over Earth and its colonies. The court's power has never been so great as it has been when merged with the void.