Princess Waterfall (often PW) is the ruler of the Sea Kingdom whose companion is Madam Splashicorn. She is the main love intrest of Ken and the Steel King. Her real name is Wendy but no one calls her that except Eileen.
She has waterfall hair with a rock headband. Her skin is a pale blue color similar to Marcelines.
Her original outfit is a blue fading dress that has white frills on the bottom.
She has a calm,nice attitude but can be crazy when stressed. Unlike most princesses she is very adventurous. Her temper gets very high when shes angry and might even punch or kick.