Jacks are enemies fought in the Run 'n Gun level Funhouse Frazzle from Inkwell Isle Two.
Appearance[]
Like the name implies, jacks are small mint or pink knucklebones that consist of six points, with four knobs that act as eyes.
Behavior[]
These creatures will appear from above or below during the last section of the level. They spin around in the air and will slowly come towards the Cuphead/Mugman. It only takes one shot to defeat them.