They resemble Gapers with melted faces and empty eyes.
While following Isaac, they move very slowly than Gapers while leaving a small trail of red creeps behind them. Since they were slow, they can be easily killed without dealing damage.
- Ironically, Skinnies are often seen accompanied by Fatties.
- The word "skinny" is a slight insult used on people with thin weights.
- Their Japanese name, "Sukinī", translates to "pirouette". Even though, pirouette means to spin around with one foot like how most ballerinas do.