109 Madison Lane

109 Madison Lane is the address of the man in black's house.

The Disturbing Origin of Jeff the Killer
At the end of The Disturbing Origin of Jeff the Killer TheGamerFromMars goes to drink a bottle of water but when he drinks it he almost chokes on a key. He then spits the key and takes it. This key is later revealed to be the key to 109 Madison Lane.

The Missing Jontron Videos
At the end of The Missing Jontron Videos TheGamerFromMars hears his doorbell ringing and when he opens the door he finds on the floor a piece of paper with 109 Madison Lane written on it before the video ends. This is later shown to be the man in black's address.

The Missing Nickelodeon Movie
At the end of The Missing Nickelodeon Movie TheGamerFromMars takes out a piece of paper with 109 Madison Lane written on it and after examining it leaves his house to go to 109 Madison Lane where the man in black is waiting for him with a cat in his hands. He then asks him what he wants and the video ends.