| Greg Sleep|
|Riddle School 3|
|Riddle School 4/5|
|Least Favorite Thing||Being awake|
|Appearances||Riddle School 1,3,4 and 5(in Phred's Dream)|
Greg is one of the students in the Riddle School Series. He is the only student who sleeps throughout the series. He doesn't contribute to the plot, the schools, or himself.
- It is confirmed in Riddle School 4 that he is Mrs. Sleep's son (you could figure that out before RS4 because both of their last names are "Sleep").
- For some certain reason, Greg shifts quite often while sleeping in the first Riddle School.
- Riddle School 4 and Riddle School 5 are the only games that you can see his face.
- As revealed in the developer commentary in the early planning stages of RT2, Greg was supposed to be a secret villain, but this idea was dropped quickly.
- Riddle School 4 and Riddle School 5(Phred's dream) are the only games where Greg is not in the cafeteria.