Name's Dennis! I've been hired to exterminate you.
~ Dennis
Come on, kid. Give it up! Dennis always gets his man!
~ Dennis, as he is preparing to kill SpongeBob.
THAT'S IT! I'm through messing around! SEE YA LATER, FOOLS!
~ Dennis' last words before meeting his defeat.

Dennis the Hitman, mainly known as Dennis is one of the secondary antagonists of Nickelodeon's 11th feature film, The SpongeBob SquarePants Movie. He is an assassin who was sent by Plankton to stop SpongeBob and Patrick from finding King Neptune's crown.

He was voiced by Alec Baldwin who also played Makunga, Nicholas Kudrow, Larry Quinn, and Donald Trump.


Dennis was an assassin who was hired by Sheldon J. Plankton to kill SpongeBob SquarePants and Patrick Star. The reason being that Plankton stole King Neptune's crown, sold it to a forbidden land called Shell City and framed Eugene H. Krabs for the crime so Neptune threatened to execute Mr. Krabs (via burning by fire) unless the crown was to be retrieved within a period of six days; Plankton, obviously, wanted Krabs to die of a painful and wrongful execution, and upon learning SpongeBob's and Patrick's journey to get the crown back, he knew that Neptune would discover that Plankton was the thief, so he sent Dennis after them.

Dennis first appeared in the film after Spongebob and Patrick left on a mission to bring the crown back to King Neptune, he inspects left behind sesame seeds from the Patty Wagon and notices two gasoline workers that helped Spongebob and Patrick. He uses his hands to pull their mouths out of both of them and drives off to find Spongebob and Patrick and stop them.

Later in the film, SpongeBob and Patrick encountered Dennis for the first time during the middle of their journey. Dennis removes Spongebob and Patrick's mustaches that were used to become "men" (which are made of sea grass and given by Princess Mindy) from their face, stating that they were fake. After revealing to his victims that Plankton is the one who stole the crown and send it to Shell City, Dennis was about to crush them with his "big" spike boot, only to be crushed by the Cyclops's "bigger boot". After what happened at Shell City, SpongeBob and Patrick escape and ride on the backside of David Hasselhoff, who speedily swims through the ocean in order to send them back to Bikini Bottom. During the middle of the swim, SpongeBob and Patrick see the boot of the Cyclops that he stepped on Dennis with. It stops behind his foot and lifts back to show Dennis, who is squished into a green pulp like Plankton always does when somebody steps on him. Dennis then detaches from the boot and onto Hasselhoff, revealing that he is still alive. He tries to kill SpongeBob and Patrick, but fails yet again when the catamaran's horn honks at them, due to his enormous size, he was knocked out by a catamaran that Hasselhoff swam under, never to be seen or heard from again by the viewers for the rest of the film, though his fate remains uncertain.


Dennis is murderous, manipulative, cold-blooded, vituperative, and dishonest. He is a selfish, loathsome, bloodthirsty, and opprobrious assassin who supposedly tries to kill SpongeBob and Patrick and prevent them from bringing the crown to King Neptune. He is also very culpable, scandalous, blameworthy, hypercritical, and unscrupulous, so he loves hunting and killing anyone he is hired to kill. One of his most abominable plans is when he tries to prevent them from bringing the crown to King Neptune.


Dennis is tall, slender, and has olive green skin. He usually wears black cowboy-type hat, a gray shirt, a black vest, a pair of silver shoulder pauldrons, a right-hand fingerless spiked glove, a pair of black sunglasses, a red handkerchief which covers his mouth, black trousers, a dark gray utility belt with a skull symbol, and a pair of black boots with spikes underneath. When Dennis is crushed by the Cyclops, his clothes are damaged and ragged, he also has eyes with black irises and a mouth reveals sharp and pointy teeth. His appearance was inspired by various motorbike gang members.



  • As The SpongeBob SquarePants Movie was originally stated to be the series finale of the show, Dennis was never seen again for the rest of the franchise.
  • Despite being Plankton's minion however, Dennis never interacted with his boss on-screen though due to that Plankton seems to have trust with Dennis into preventing SpongeBob and Patrick from getting Neptune's crown and by the fact that Dennis wants to kill SpongeBob and Patrick and was also aware that Plankton stole the crown hinting that they might be on good terms. They both do villainous schemes in separate and different ways during the film. They may also have some things in common, like when both of them get crushed, they become green blobs.
  • He also can breathe outside of water without any trouble. Although this could be because he was under a boot for some time and the boot sped through the water, thus giving Dennis more moisture. 
  • He resembled Plankton after he was crushed by the Cyclops.