The Twin's Room is one of the many rooms in Luigi's Mansion. It is located in the first area, but Luigi cannot enter the room until he is in the third area.
Using the key he had obtained from Nana's room, Luigi managed to open the door to the Twin's Room. Inside (after some searching) Luigi found the ghostly twins Henry and Orville. Asking if Luigi wanted to play hide and seek with them, the ghost hunter agreed seeing no harm in that.
Telling Luigi to go outside while they hid, Luigi complied and after being called back in began to search for them. The twins had shrunk themselves and hid in boxes Luigi had to find out which one, after a trick with the Poltergust Luigi found them. Accusing Luigi of cheating the twins attacked with go-karts and diving planes. Sucking up their vehicles Luigi managed to beat the ghost children and suck them up the Poltergust 3000.
The Twin's Room is small in size and filled with childrens toys such as trucks on the shelf, model planes hanging from the ceiling and a globe on a desk near the door. A pair of tennis rackets are in the corner next to a desk cluttered with books and a poster of the Munsters is on the wall. A Speedy Spirit is hiding in the bunk beds.