They are everywhere in the school.
It takes the shape of a mouse like head with a speech bubble screaming for help.
No one seems to notice them, in universe or out as no one in the fandom talks about them.
It's even on the front door!
Who is writing these pictures, and why? What do they need help from?
Is it a mouse like Louie? Or a descendent of Louie? Maybe Louie when he attended middle school?
There is no lore or explanation behind them and it's driving me crazy! Will somebody please explain these drawings to me?!