Dennis (The Hitman)
He was a mercenary who was hired by Plankton to kill SpongeBob and Patrick. The reason being that Plankton stole King Neptune's crown and tricked King Neptune into believing the crime was committed by Eugene H. Krabs, so King Neptune threatened to execute Mr. Krabs (via burning by fire) unless the crown was to be retrieved within a period of 6 days; Plankton, obviously, wanted Mr. Krabs to die of a painful and wrongful execution, and upon learning SpongeBob and Patrick's journey to get the crown back, he sent Dennis to stop them before they reached Shell City.
SpongeBob and Patrick, after surviving the "deep, dark, dangerous, hazardous and monster-infested trench", encountered Dennis for the first time. Just as Dennis was about to kill them with his "big" spiky boot, he ended up stepped on by the Cyclops' "bigger boot". After what happened at Shell City, SpongeBob and Patrick hitch a ride on the 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 approaching Hasselhoff. Dennis (who was crushed in a similar manner to Plankton), reforms and peels off the boot revealing that he is still alive. He tries to kill SpongeBob and Patrick, but fails to do so. He was hit in the face by an overpass Hasselhoff ducked under water but Dennis could have been killed.
- Wears a red handkerchief around his neck
- Has a necklace with a hunting knife on it
- Has a skull design on the back of his jacket
- All together has a sort of cowboy/biker look
- Never forget his horrible spiked boots that almost killed Patrick and SpongeBob!
- Wears a spiked glove on his right arm
- Giant Boots
- Oncoming Boats
- He was voiced by Alec Baldwin.
- Dennis the Hitman is not the same person as SpongeBob's friend from elementary school, Dennis
- His right shoe has the sentence, “your head here".
- His motorcycle license is "I KILL U", which means "I kill you.".
- It is unknown if when he was hit by the boat he had his head decapitated or he just fell into the ocean though seeing as how it doenst show him falling it is possibly the former.
- There wasn't a scene in the movie where Plankton employs Dennis, or one where Plankton meets Dennis. Either both the ideas became deleted scenes that weren't put on the DVD of the movie for some reason, or they chose to remove it and not put it on any disc or add it on any airing of the movie.
- His motorcycle looks like a chopper.