The Giant Moon Rat is a boss in the Moon level of the DuckTales video game. The Moon Rat jumps around, trying to pounce on Scrooge in the NES version. In the Remastered version, the Moon Rat is one of the escaped rats in the spaceship. After eating the Green Cheese of Longevity, the Moon Rat has grown into a big rat. It still tries to pounce on Scrooge, but with some new powers. With the cheese, the Moon Rat can teleport and use enhanced speed to hit Scrooge. After defeat, the Moon Rat turns back to its normal size, and Scrooge gets the Green Cheese of Longevity.