Subconscious Dread / Unknown Memory

This Entity is from a ROBLOX game called "The Broken Dream"
in the game:
Unknown Memory is an entity that is found in every dream of Chapter One, but its main reveal is in Grassy Beach and fully appears in The Twist with an antagonistic role. Once found in the classroom window, it will begin to follow your movement until you reach the end of the hall in which sets it free. As you move throughout The Twist, the player must keep an eye on it at all times due to him teleporting unpredictably.