Police released a sketch early Tuesday of the pervert who exposed himself to a 63-year-old woman inside a Union Square Park bathroom on Sunday and demanded a sex act.

The woman was inside the stall at the public restroom in the park at 1:15 p.m. when the 30-year-old man busted in, police said.

The victim bit the predator’s left hand, forcing him to flee, cops said.

Police describe the creep as a man with a thin build, short hair, and a long goatee. He was last seen wearing a green army camouflage jacket, an orange hoodie, dark jeans and a backpack.