KyuuKyuu-kun
KyuuKyuu-kun is a character that can be found in the Stairway, which can be reached from Number World. He is often thought to be an example of phallic imagery present in Yume Nikki.
FACE
Although FACE is not a character, it is found in the same place as KyuuKyuu-kun, so is often associated with it. Some fans use it as evidence that Madotsuki was raped alongside KyuuKyuu-kun.