STOP SINGING! Productions is a logo from Steven Universe.
Nicknames: "Jasper and the Stop Sign" "Jasper warning not to sing with the stop sign"
Logo: In a gemmy cave background, We see a stop sign and Jasper punching a bit of the cave. Then saying "STOP SINGING!"
Scare Factor: Low to medium. The Stop Sign and Jasper warning not to sing might scare a little bit.