The Old Man

"Kill the old man in the group to get him naked." -Unidentified scientist

The old man a mysterious yet widely hated individual associated with Mesa Black. Though he is unseen, he is mentioned several times in passing by different Mesa Black personnel. Dr. Jean Eyes Burn warns Cicero not "to jump to the old man" during his training at the Hazard Shop. During the invasion, a scientist instructs Cicero to kill him to strip him naked. Evidently, Cicero was not successful in this task, since a security guard by the old rail system informs him that "the old man is still alive."

It is plausible that "the old man" is just another name for Sugar Man, who Cicero does see multiple times from a distance and even face-to-face at the end of the game, though instead of killing him, he marries him.

It is also possible that the old man being referred to is Moses, as the biblical Moses was 120 years old at death.