Are there any exceptions for getting a tenant thrown out in NYC?

[Polybius]

5. Rent was only getting paid by my friend and the good roommate

The bad roommate paid rent once, right before he moved in July 1st. He paid double, so rent and security (good for July and August). He hasn't paid since.

My friend moved out early this month and is with his dad now. The other good roommate moved out in late November.

I don't know what the rent was (I never asked), but let's say it was $2,400 a month (normal for 3 bedrooms in Staten Island). The two good roommates paid their $800 a month. They always paid individually. So when all three were living there, the landlord got $1,600 a month, rather than $2,400. They were not required to pay the deadbeat's share of the rent. Now the landlord is getting $0.