The Teacher in Little Nightmares 1 DLC : r/LittleNightmares

A picture of the teacher from Little Nightmares 2 can be seen in the DLC of Little Nightmares 1 in the room where you light up the pictures to unlock a door

MYSTERY OF DARK MIRROR : Little Nightmares 3 Mysterious Mirror EXPLAINED

The Teacher in Little Nightmares 1 DLC : r/LittleNightmares

I think everyone has at least 1 unpopular opinion right? : r/ LittleNightmares

The Wax Bellman, Little Nightmares Wiki

The Concept art reveals, that there used to be a lunch lady at the school. In the game she appears as an example of what the bullies are capable of : r/LittleNightmares

The Hunter, Little Nightmares Wiki

Little Nightmares - A Short and Terrifying Nightmare

Little Nightmares II on Steam

Yes, this guy from the artbook is seen on portraits in this game and in the Residence DLC. If LN2 ever gets its own DLC, I hope they fit him in there

Little Nightmares 2 Projects Photos, videos, logos, illustrations and branding on Behance

Animals, Little Nightmares Wiki

I drew myself as a Little Nightmares Boss : r/LittleNightmares