Dr. Shay Lamden, nicknamed King Shark by Patty Spivot, is a meta-human with the physical characteristics of a human and a great white shark. He was hired by Zoom to take out Earth-1's Flash, only to be brought down by Harry Wells and captured and imprisoned by A.R.G.U.S. Though Shay eventually escaped, he was defeated and re-captured again by Team Flash. Formerly, Shay acted as a type of "guard dog" at A.R.G.U.S. Though he eventually escaped again, Shay was defeated and re-captured a third time by Team Flash.
