I ride the 
daily to my college. I always take the front car (motorman car) due to easy exiting at the station. Anyways when I ride the this guy comes in with his bulky luggage and duct tape.
The first encounter I saw this guy when I was sitting next to the wall of the subway car door (you know the seat right next to the door to the next car) At 111th street he came in and told me to move. I asked why? The subway car was not even packed only a handful of people. He tapped on the sign "would you please give this seat to the elderly or the disabled" and said "I'm disabled. Move to other seats" I do have a disability: I'm deaf. He looked fine but I didn't want to inquire him too much and wanted to see what the heck he was doing. He proceeded to cover up the vent gate with duct tape, took the exit door and held that with duct tape. I sat further watching him and people told me "He is crazy!" and I said "something up". He had a luggage duct tape covering on it. Then he proceeded to sleep in a jacket which is made of duct tape. The jacket looked like those hazmat crew outfit. I thought this was a weird thing and hopefully this was one time thing.
Few months later..... I saw him again! At Flushing Main Street he was already in the train. I sat the bench right across of him. As the train rolled along the route I was on the phone minding my own businesses. Then I looked up and saw him looking at me. He reeked and told me "Move. I want open the window" then he opened the window. I was confused why he wanted to keep the exit door open but wanted the window to be opened and the vent gate was covered. To make things weirder he was barefoot took off his shoes during the ride.
This was the most weirdest person I ever met. I can see his "property marks" when he forgot to remove the duct tape from the door handle and the wall. The tape was cut off but he was lazy to remove the entire tape length.
Has anybody noticed this guy before systemwide?