Prison Key

The Prison Key is an item found in Bowser's Castle in Paper Mario during Chapter 8. It is held by the Koopatrol outside the prison.

There are two prisons in Bowser's Castle used to lock the people at Princess Peach's party that fails to escape. The first one is east to the first center of the castle imprisoning three Toads and a Dryite. The second one is west to the second center of the castle imprisoning three Toads and a Bumpty. When Mario sees a prison, he can optionally defeat the Koopatrol outside it and open the prison door. But if he does that, the prisoners inside will say that it is safer for them to stay there, and wish Mario good luck defeating Bowser. One Toad will also make a makeshift Toad House with the slate in the prison.