Sharkman

Sharkman, aka Paul King, is the main antagonist of the Syfy movie Hammerhead: Shark Frenzy.

History
Paul King (Anton Argirov) dies of kidney cancer. Five years later, his father Preston King (Jeffrey Combs), a scientist, invites the doctors that could not save his son to his uncharted island in the western Pacific. Paul's widowed wife Amelia Lockhart (Hunter Tylo), who believes Paul died five years ago from cancer, and Amelia's new boyfriend Tom Reed (William Forsythe), also travel to the island. There, Dr. King reveals that Paul never died and was saved from death by being injected with hammerhead shark DNA to modify his stem cells. This turned Paul into a half-man/half-shark creature. Dr. King releases the water from the tank where he was keeping Paul, in hopes that he will eat the doctors as revenge for them firing him from his job five years ago. As Paul, now known as Hammerhead, chases after them, they escape along with Hammerhead.

Hammerhead begins killing the workers on the island and tracking down Dr. King's "guests" until he is eventually recaptured by Dr. King's remaining workers. Dr. King's men also capture Amelia, who Dr. King hopes his son will remember and mate with to create a half-human/half-shark offspring, as he is convinced that part of Paul is still human. Dr. King forces Amelia to watch as one of the doctors, Whitney Feder (Arthur Roberts), is fed to Hammerhead. Amelia is then injected with a drug to calm her as Dr. King watches in hopes that Hammerhead will mate with her. However, instead of mating with Amelia, Hammerhead bites off his father's right arm. Tom Reed arrives at the laboratory and rescues Amelia. He forces liquid nitrogen down Hammerhead's throat, causing him to explode. As Amelia and Tom escape, Dr. King attempts to shoot Amelia, but Tom shoots him to death. The building explodes as Amelia and Tom, the only two survivors, escape.