The Sharktopus is the main antagonist in the 2010 Syfy movie of the same name. It is a shark-octopus-like creature with sharp teeth, long tentacles and insatiable appetite.
Sharktopus returns as an anti-hero in the sequels, Sharktopus vs. Pteracuda and Sharktopus vs. Whalewolf.
It was engineered by a private research company known as Blue Water as a experimental super-weapon for the US Navy. The scientists were able to control its actions with a electrical impulse collar. Before it makes it back to the headquarters, Commander Cox orders Nathan and Nicole to test the Sharktopus by moving it in to a nearby speedboat. However, as Sharktopus closes in on the boat, the boat makes a turn and accidentally destroys the electrical impulse collar and is removed by Sharktopus, who goes on a rampage.
It then escapes to Puerto Vallarta where it continues its spree of killing people. After killing its creator, Nathan Sands, it is destroyed when Nicole activates its kill switch and explodes to its death just before it has time to kill Andy.