So class 1-A for some reason thinks it's a good idea to go into an abandoned Toy Factory. It was so long ago since they have arrived. They follow poppy down to the prison deku: I don't think this is a good idea! Bakugou: come on Deku don't be such a wussy
Kirishima: yeah I mean what could go wrong Deku: I just don't think it's a good idea

as the slove puzzles they make it to a room with padding and a glass separation.

(The yarnaby part)

the doctor starts to yapp but after

Doctor: ohh yarnaby~

yarnaby runs out from the shadows and bangs his head on the glass

Doctor: please, entertain me. I’ll be taking notes the tv turns off as yarnaby walks back into the shadows