The title of this article is a nickname, call sign, or alias.

This article is about a subject that lacks an official name and was known only by its nickname, call sign, or alias.

Prisoner 677780 was an intimidating prisoner at Dontamo Prison. No one tangled with him, and if anyone did, they would end up dead. He stole other prisoners' food on several occasions. When he tried to steal Ferus Olin's who also was there as a prisoner, he failed and later tried to kill him. However, he was stopped because Clive Flax, a friend of Ferus's, knocked Prisoner 677780 unconscious by throwing a datacard at him.