Inspired by some shit my friends and I saw/talked about on a trip to Legoland.

The Toy-Nurse is a monster who stalks a children's playground, in an otherwise partially demolished and abandoned amusement park. 

There's no agreement on what exactly she is, spoken about in whispers among terrified school-age kids. Some say she was a real nurse that worked there in the past, a possible failed mascot for the park, and others are convinced she's not even human - some kind of monster made out of lost toys, playground equipment, and cursed objects. 

Whatever she is, she is very real and stalks the playground at night. A mask and a swing-set seat always cover her face. She never directly kills any of her victims: she injects them with a concoction that drives them insane, and they're usually never seen again after this point. No one can claim to have heard her real voice, and people in her radius say they hear whispers, faint music, and the voices of talking toys. 

Preliminary:

Initial concept: