| Mrs. Sleep|
|Riddle School 2|
|Relatives||Son: Greg Sleep|
|Least Favorite Thing||waking up|
|Appearances||Riddle School 2, Riddle School 3 (mentioned)|
Mrs. Sleep only appears in Riddle School 2 where she fell asleep leaving her computer open until somebody plugged it off.
She doesn't seem to be dead because it appears that she is still breathing. She died on Phil's dream because sleepwalking on a cliff.