The female crossing guard is a fish who only appears in the episode "Something Smells."
Female crossing guard is a dark-green colored fish with faded blue lips and light green arms and legs and wears an orange raincoat, and a faded blue hat. She also holds out a sign letting cars know when to stop and when to go.
She is a crossing guard who stands in the middle of the crosswalk, ensuring that the pedestrians, in this case children, crossing the road do not get hit by a boat. SpongeBob, with bad breath, once says "hi" to her. The crossing guard smells SpongeBob's bad breath and runs away, dropping her sign on the ground causing the children to cross the road at the same time.