Extreme, EXTREME spoilers about this topic!

So going for the Secret True Ending run, you find this Orb of Darkness that takes you to Izumi's secret hideout and she lets you use her laptop. After winning Pong and selecting the two correct command prompts AND gaining access to the Dev Tools, you're supposed to search up the Database for a person named Marcus and type in the password: end times. Who is this Marcus person and what significance is he, and what is up with the password and mass spamming of "Do not believe his lies." Who's? Mark's lies, someone else's?