Patrick Andersen

Patrick is the main antagonist along with Slender Man in the MLAndersen0 ARG series.

Michael Andersen
Michael is the original personality of Patrick. Michael wants to escape from Slender Man and his alternate personality, Patrick. Michael has some Mental problems and has previously been locked up in a mental institute, where he created the "Andersen Jounals", AKA MLAndersen0, which would then be used by his doctor for further analysis of his personal condition.

Patrick Andersen
Michael then discovered that he has a split personality. One side, the hero, is Michael and the other, the narcissistic villain, is Patrick, who is considered a Proxy. Patrick is the evil alter-ego, proxy side of Michael, and he wants to take full control of Michael. Patrick is a member of the Proxies of the Slender Man.

He constantly torments the "Michael" personality in the series.