Mario.exe was an Serial Serious Killer, He Had Something To Do Through his Final Form.
Shrimpo.facade is an Retake Version of "Faceless Shrimpo". An Entity who Had Lifeless Itself In The Void Of Empty.
We Don't Know
STALK.sprout is An Entity Due His Hiding Skills, He has a Knife On His Back When you Try To Closer To Him.
We Will See Him Later.