Drowned Boy in Hawaii
From Super-wiki
Drowned Boy in Hawaii
An urban legend about a young boy who was murdered by drowning in a pond on the Big Island of Hawaii. According to the legend, the boy's angry and violent spirit haunted the pond, dragging down swimmers and drowning them. No one could stop the murders from occurring; the Drowned Boy continued to grab and drown people until he finally got the person that murdered him.
– Pad of Definitions (1.03 Dead in the Water), Official Website