SpongeBob x Death Note

SpongeBob x Death Note

A Story by Bigfoot Writes Stuff
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I just finished watching Death Note a few days ago, so I thought it would be entertaining if it had a crossover with Spongebob.

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Spongebob x Death Note

In this story, Ryuk decides to drop his Death Note under the sea in Bikini Bottom out of boredom. The Flying Dutchman is also able to find a Death Note during his travels since he’s already like Bikini Bottom’s Shinigami. In this episode, Plankton is moping at the Chum Bucket about how he’s failed to get the Krabby Patty secret formula for the 900th time. “Karen, no matter what I do, I still can’t get the Krabby Patty secret formula even though I’m an evil genius. It’s like fate’s just not on my side. If only a miracle would just fall right out of the sky.” 

Plankton goes outside to get some fresh air, and sees the Death Note lying on the ground. “Huh? What’s this?” Plankton picks up the Death Note and takes it back into the Chum Bucket. He starts reading it. “Write a person’s name into the Death Note and they will die within forty seconds of writing their name.” Plankton starts laughing maniacally, knowing exactly whose name he’ll put in the Death Note. “Karen, where’s my pen?” He walks over to his desk with the Death Note and places it open and flat on the desk.

“It’s right over there in the cup, sweetie.” Karen replied.

“Thank you, my computer wife.” Plankton got the pen from the pencil cup and walked back across the desk to the Death Note with the pen.

“Let’s see how you like this, Krabs!” Plankton writes “Eugene Krabs” in the Death Note. Plankton does his evil laugh while writing Mr. Krabs’s name.


French announcer: “Meanwhile” 

At the Krusty Krab, Mr. Krabs is walking back to his office. “Today’s a good day for makin’ some money-ay!” He said as he walked, then suddenly he clutches his chest and collapses, dying from a heart attack. Squidward witnesses this, and rushes to Mr. Krabs’s carcass and gasps. “Oh no, Mr. Krabs! Who’s gonna sign my paycheck?

Spongebob is working in the kitchen, but stops what he’s doing. “Mr. Krabs?” He runs over to Mr. Krabs next to Squidward. They turn over Mr. Krabs to see his lifeless face.“Mr Krabs!” Spongebob starts crying. 

A few more people in the Krusty Krab drop dead, and the patrons in the Krusty Krab call the police, and Squidward and Spongebob decide to leave the Krusty Krab and go back to Squidward’s house. Plankton is of course able to benefit from this and get the secret formula. Squidward & Spongebob sit in the dark in Squidward’s living room. “What are we gonna do now, Squidward? I’m so scared!” Spongebob said while holding himself.

“I-I don’t know, Spongebob.” Squidward’s voice took on a lighter and more concerned tone than his usual detached, indifferent self. “This is really weird that so many people died at the Krusty Krab at the same time. I bet Plankton is behind this! But how do we get to him when we could be next?”

“Let’s go ask Sandy. She’s pretty smart.” Spongebob said while still choked up from crying.


French announcer: “Meanwhile.” 

At the Chum Bucket, Plankton is relaxing on a tiny couch on a table now that Mr. Krabs is dead and he has the Krabby Patty secret formula.”Isn’t this great, Karen? We finally did it. The world is mine.” 

Suddenly, Ryuk the shinigami climbs through the window in the Chum Bucket. Ryuk stretches and saunters over to Plankton. “Ah, so you picked up the Death Note.”

Plankton, surprised, looks over across the room at Ryuk, who’s like sixty feet tall compared to Plankton, and sees his wide, unblinking eyes. Plankton is startled and falls off the couch. “AAAHH!!” He backs away from Ryuk and tries to get behind the couch. “I swear I didn’t know it was your notebook.”

“That’s okay. You can keep it, for now. I’m just bound to the Death Note and have to be wherever it is.” Ryuk explained. 

Plankton, now a little bit more at ease, decided to get out from behind the couch and sit down on the couch. He rested his elbows on his thighs and held his chin with his hands. “Hmm, so why did you drop it?”

“Out of sheer boredom. The Death Note’s never been used under the sea before, so I thought it would be entertaining. You got any apples by the way?”

“No, I got chum. . . and Krabby Patties finally.” Plankton leaned back on the couch at the thought of having the Krabby Patty secret formula at last.

“Fish food huh? Well, that’ll have to do.” Ryuk shrugged. It was better than nothing. After all, getting the Krabby Patty secret formula was a forbidden fruit in its own right to Plankton.


There was the bubble effect to transition to the next scene, perhaps even a loading screen like Around The Clock At Bikini Bottom. Spongebob and Squidward are at Sandy’s tree dome inside Sandy’s tree house. Sandy is sitting at the computer looking at files on the suspected Kira while Spongebob and Squidward. “Hey Spongebob and Squidward, I may have lead on who killed Mr. Krabs. I suspect it’s Plankton, considering he’s the only suspect we have so far who’s smart enough to kill someone without touching them.”

“What should we do then, Sandy?” asked Spongebob.

Sandy turned around in her chair and looked at Spongebob and Squidward. “I suggest one of you two work for Plankton and try to get information. Our best bet for working for Plankton right now is you, Squidward.” She turned her head and looked at Squidward.

“Huh? Why me and not Spongebob?” asked Squidward, surprised.

“Because Plankton would be suspicious of Spongebob, seeing how he was so close to Mr. Krabs. But you, you’d seem indifferent or even relieved about the situation, Squidward, so he’d be less suspicious of you. Where’s Patrick by the way?”


French narrator: “Meanwhile.”

At the Flying Dutchman’s ship, the Flying Dutchman had managed to find the Death Note in a pile of buried treasure while passing through the shinigami dimension. On the poop deck of his ship, held the Death Note open in his hand and looked at it. “Well what do you know? Now I don’t remember all the names of people I want to send to Davey Jones’ Locker. I can just write them down in this little notebook.” The Flying Dutchman closed the Death Note and set it down on the edge of the ship. “Oh well, time to go take care of some other business.” He walked away from the Death Note sitting on the edge of the ship, and walked over to the bathroom. 

Not long after he left, the Death Note fell off the ship and descended down to Patrick’s yard. Patrick opened up his house rock attached to the side of it like he normally does. “Good morning, Bikini Bottom!” Patrick noticed something lying on the ground. “Huh?” He meandered his way out of his house, and walked over to the Death Note. “A notebook? Yay a free notebook!” 

Patrick picked up the notebook and started walking back to his house before being interrupted by the Flying Dutchman. “So ya got the old Flying Dutchman’s Death Note did ya, ye scallywag?”

“Huh? Are you the genie that comes with my notebook? I’ll write down my three wishes!” Patrick opens up the Death Note and takes a pen out of his pocket and clicks the point out of the pen like he’s about to write something.

“Nay, the Flying Dutchman is a shinigami not a genie.” corrected the Dutchman.

“Oh. . . Does that mean I can make animal shapes out of the notebook paper?” asked Patrick. Patrick lowered the pen down to his side.

The Flying Dutchman facepalmed. “That’s origami ya numbskull!” Patrick had his hands down to his side while the Death Note is closed in his hand while the Flying Dutchman explained the rules of the Death Note to Patrick. “As an owner of the Death Note, you won’t go to heaven or hell. You’ll be going to. . . DAVEY JONES LOCKER!!!” the Flying Dutchman said dramatically.

“Wow.” said Patrick.

“There be one more thing though, lad. The Flying Dutchman will give you Shinigami eyes so you can see a person’s name above their head, but the date of your death will be-”

“I’ll take it.” Patrick said without thinking and crossed his arms.

“Okay.” The Dutchman said in as monotone voice and with a long face, surprised that Patrick would just accept The Eyes without thinking it over first. “Most people need to think it over before they decide.”

“I said I’ll take it.” said Patrick. The Flying Dutchman moved closer to Patrick and gave him the Shinigami eyes.

The Dutchman handed Patrick a mirror. “What do you think?”

Patrick looked at his new eyes in the mirror. “Wow. I need to test these bad boys out!” He handed the mirror back to the Dutchman and walked down the road to a random person’s house. 

He knocked on the door and they opened the door to see Patrick.”Yes?” Patrick then began to stare at them and his eyes zoomed in on them like the Chocolate With Nuts episode. “Why’s chubby staring at me?” 

Patrick could now see the person’s name and date of death above their head as he stared at them. “Focusing.”

The person then backed away and grabbed the door. “Hey get back!” He slammed the door on Patrick’s eyes.

Patrick’s eyes drooped for a second, then began looking around. “Hey nice place ya got here.Too bad it’s mine now. . .” 

“Wait what?” The person asked.

Patrick opened up the door slightly to free his eyes, then he took out the Death Note and wrote that fish’s name in the Death Note as ominous music started playing. “It was nice knowin’ ya.” There was awkward silence.

“Uhh, Patrick. It takes forty seconds for someone to die after writing their name in the Death Note.” said the Flying Dutchman.

“Oh yeah right.” They wait forty seconds, and the fish dies of a heart attack. The ominous music started playing again and Patrick walked away and laughed sadistically.


There was a bubble effect to the next scene, and it was Squidward at the Chum Bucket. Squidward walked up to the Chum Bucket outside and met Plankton. “Well hello there, Squidward. What brings you to my establishment on this fine day?” Plankton said, happier than usual.

“Hey there, Plankton. Since Mr. Krabs is dead, I need to get a job elsewhere. Are you hiring?” Asked Squidward.

This is beautiful. The camera panned in on Plankton’s face as he said that in his head, then the camera went back to normal. “Yeah of course, Squidward. Having all these customers at the Chum Bucket is a bit overwhelming for just me and my computer wife Karen.” The two walk into the Chum Bucket together, and Plankton gives Squidward instructions on what to do next. Plankton has Squidward clean the Chum Bucket and do various chores. “So how does it feel, Squidward, to no longer have to work for that deadbeat cheapskate Krabs and to work for a real winner like me?” asked Plankton arrogantly.

Deep down Squidward resented Plankton’s actions, but he had to keep it cool. “Uh, yeah it feels pretty good hehe.” Squidward said a bit nervously. “No more getting paid thirteen cents an hour.” Squidward continued to do chores for Plankton. He went into Plankton’s office to throw away trash he found into the bin. However, Squidward saw the Death Note laying on Plankton’s desk. He approached the Death Note and picked it up to look at it. “Huh, what’s this?” he asked. Suddenly, he could see Ryuk standing across from him on the other side of the desk. 

Squidward slowly lifted his head up to look at Ryuk’s grotesque face. “Well hi there! You can see me?” waved Ryuk.

“AAAAAAHHHHH!!! HOLY FISHPASTE!!!” The camera was on the outside of the Chum Bucket as Squidward screamed.


There’s a bubble effect to the next scene, and Patrick is being interrogated on the street about Kira by a couple of police officers. “Listen, son, we suspect you might be Kira or the second Kira, so are you Kira?” asked police officer 1.

“No, this is Patrick.” replied Patrick.

“Okay, are you the second Kira?” asked police officer 1.

“No, this is Patrick.” Patrick replied, mildly annoyed.

“Yes, we know you’re Patrick, but we want to know if you’re the second Kira.” explained police officer 2.

“No! This is Patrick!”

“Alright, we’re going in circles.” Police officer 1 said. He took out a wanted poster of Plankton. “Look, this is the suspected Kira’s wanted poster. We want to know if you’ve seen-”

“AHHH!!!” Patrick screamed suddenly. 

Police officer 1 hid the poster and police officer 2 said, “It’s just a drawing.” They showed the poster again.

“AAHHH!!!” Patrick screamed again. The police officers smirking, kept showing Patrick the wanted poster then hiding it repeatedly. Patrick screaming every time he saw it.


There was the bubble effect that transitioned to the next scene. It was at the nursing home where Mermaid Man and Barnacle Boy stay at. Mermaid Man and Barnacle Boy are sitting on the couch watching the news on TV. The talking fish head appeared and said, “Because of the numerous killings in Bikini Bottom including Krusty Krab owner Eugene Krabs,” Mr. Krabs’s picture flashed on the screen. “Who have died of a heart attack mysteriously, the Bikini Bottom police suspect that there is a serial killer that they are calling Kira for the time being. What’s that? There have been more killings seemingly unrelated to the Krabs killing, but not nearly as polished and thought out as the first killings. Are there two Kiras? Either way, the culprit behind this is pure evil.”

Upon hearing the word “evil”, Mermaid Man yelled his iconic line “EVIL!!!”

“Pipe down ya old coot!” said Barnacle Boy after being jumped by Mermaid Man’s yell.

“We’ve got to do somethin’ about this, lad. I wonder if Man Ray and the Dirty Bubble are behind this again?” said Mermaid Man.


Meanwhile, at Sandy’s tree dome, Sandy was watching the same broadcast, and decided to contact Plankton. “Plankton, you’ve got an incoming call.” Karen said at the Chum Bucket.

“Huh?” Plankton said as he entered the computer room with Squidward and Ryuk next to him.

A gothic “S” appeared on the screen as the call started. “Howdy, this is. . . S, and I wanted to ask you your expertise on the Kira case, seeing as you’re the smartest person I know and you’d know why someone would catch Mr. Krabs.” explained Sandy with a distorted voice so as to hide her identity.

“Ah, I see what you mean. Whoever this Kira is, he sure did me a favor by getting rid of Mr. Krabs. Not that I did it of course.” said Plankton.

“Interesting. Rumor has it that there’s two Kiras with completely different ways of thinking and methods of killing. However neither of them need to touch their victims to kill them.” said S.

“Oh yes, the second Kira is a total imbecile compared to me- I mean compared to the first Kira.” said Plankton.

“That’s all, Plankton. Thank you kindly for your cooperation.”

“You’re very welcome. Hasta la vista, baby.”

The call ended, and it was back at Sandy’s tree dome. Sandy got out of her chair and took the Mermaid Man & Barnacle Boy conch shell out of her pocket and handed it to Spongebob. “Here you go, Spongebob. You’ll be going to Patrick’s house because I suspect he’s the second Kira. If anything scary happens, call Mermaid Man and Barnacle Boy with this.”

“Alright Sandy.” said Spongebob.


There was the bubble effect to the next scene, and Sandy drove Spongebob to Patrick’s house in a boat car. They were listening to the radio, but suddenly it was interrupted. “We interrupt this broadcast to give you a message from Kira.” said the radio DJ. 

“How many times do I have to tell you? This is Patrick. I am not a Kira.” said Patrick with his voice altered so it’s deeper and more robotic sounding like he was supposed to hide his identity. “Anyway, if you don’t play this next song, let’s just say there’ll be serious consequences. . .” The radio the played Patrick’s song “F*** School” where Patrick just repeats “F*** School in his normal voice over a heavy metal beat.

When they arrive in front of Patrick’s house, Sandy stops the car. “Here we are, Spongebob. I’d let you drive yourself but I know how bad you are at boating school.” said Sandy. Spongebob got out of the boat car and walked to Patrick’s house and went inside.

Patrick is standing in the living room looking at Spongebob as he entered his house and approached him. Patrick appears to have gone through a transformation. He’s no longer the cartoony starfish. Now he’s the ultra-realistic starfish from Potrick Snap that looks like Caseoh. “Hello Spongebob.” he said as he stared at Spongebob.

“Hey Patrick, do you need me to help you with some chores?”

“Yes actually. I hate doing chores. First I need you to move some cardboard boxes to the closet while I watch TV, then we can talk about what else you can do.” explained Patrick.

“You can count on me, Patrick!” Spongebob said as he saluted Patrick.

“Ok.” Patrick said as he walked over to the couch and watched TV. It was a bit creepy considering it was just static on the TV. Spongebob took care of the cardboard boxes one by one that were sitting next to the TV stand in the living room, and put them in the closet. Once Spongebob finished moving the cardboard boxes, Spongebob turned around and got jumped by the fact Patrick was already standing in the doorway. “Did you finish moving the cardboard boxes?” Patrick asked.

“Yes! But did you have to give me a heart attack?” asked Spongebob, holding his chest.

“Sorry.” Patrick said in a serious tone. “Now, I need you to clean the entire house while I go take care of some business. I have a guest coming over.”

“Who is it?” Asked Spongebob.

“You’ll see. Just do it. Any funny business and I’ll be using your sponge carcass to clean my butt. Got it?” threatened Patrick.

“Aye aye, Patrick!” said Spongebob.

“Good. Then get to it.” said Patrick. Spongebob began to pick up any trash, sweep the floor, and look for clues throughout the house. Meanwhile, Patrick got dressed up as Patricia. Putting on a skirt and bra, a blonde pigtails wig on his head, and some makeup to dress-up as a girl and roleplay as Patricia or the second Kira.

When Spongebob was in the middle of cleaning, Patrick appeared in the doorway again, this time dressed like Patricia. “Did you finish cleaning?” asked Patrick.

“Not yet, and why do you look like that?” asked Spongebob.

“Ask me no questions and I’ll tell you no lies.” said Patrick. “Anyway, I’m heading out now. Remember, I’ll be watching.” Patrick or Patricia showed his Shinigami Eyes to Spongebob, then turned and exited his house.


French narrator: A few minutes later.

Patrick, dressed as Patricia, went to the Chum Bucket. When he went inside and approached Plankton, Plankton immediately noticed Patricia. “Hello! Wait, what the f*** Patrick? Is that you?” said Plankton, flabbergasted.

“Konnichiwa, onnii-chan. I didn’t mean to startle you, but I thought it would be better if I introduced myself as Patricia because I’m the second Kira. I even got the eyes and everything.” Patricia showed Plankton the shinigami eyes.

“Okay, so what do you want?” asked Plankton.

“Well, it’s a relief that you got rid of that cheapskate Krabs, so how about a proposal?”

French narrator: “Meanwhile.”

Back at Patrick’s house, when Spongebob made sure Patrick was gone and realized Patrick doesn’t have nearly the IQ to be omniscient like that, I should call Mermaid Man and Barnacle Boy. They’ll know what to do. He said in his head. Spongebob went outside of Patrick’s rock house and took the Mermaid Man and Barnacle Boy conch shell he won in a contest out, and blew it to call for Mermaid Man and Barnacle Boy. At Mermaid Man and Barnacle Boy’s nursing home, Mermaid Man was sitting in his chair and cupped his ear when he heard the Merma-call. “Do you hear that, lad?” asked Mermaid Man to Barnacle Boy.


Back at Patrick’s house, “Patricia” and Plankton entered Pat’s home and talked with Spongebob. “Here he is, Plankton. Spongebob is my personal slave.”

“Oh yes, how evil, and brilliant. Having your own best friend and Krabs’s trusted fry cook be your personal slave. I love it.”

Suddenly, Mermaid Man and Barnacle Boy entered Patrick’s house, and Mermaid Man ran over Plankton. “EVIL!!!” Mermaid Man said as he pointed up and crushed Plankton with his foot.

“OW!!!” yelled Plankton in pain.

“You’re under arrest, you fiend!” yelled Barnacle Boy. 

Plankton crawls out of harm's way and took his Death Note out to try and write Mermaid Man & Barnacle Boy’s names. When Plankton took his pen out to write their names, he paused. “Oh s**t I don’t know their real names.” He looked up at Mermaid Man and Barnacle Boy. “Hey, excuse me, Mermaid Man can you tell me your real names? I’m a huge fan of Mermaid Man and Barnacle Boy.” asked Plankton nicely.

Mermaid Man and Barnacle Boy turned to face Plankton. “Uhh. . .” Mermaid Man thought about it. “We haven’t used our real names since 1962… or was it 1952?” Mermaid Man said as he thought about it.

“Don’t you see this is a trap?” said Barnacle Boy. He approached Plankton and crushed him by stomping on him.

“AAAAHHH!!!” screamed Plankton.

However, Patricia can see Mermaid Man and Barnacle Boy’s real names and date of death when they turned back around to face him since he has the shinigami eyes. “Time to take a man’s life. . .” Patricia said. Ominous music began to play as Patrick rushed to the other side of his house and wrote down Mermaid Man and Barnacle Boy’s real names in the Death Note. Shortly after, they both collapsed from a heart attack and died.

“PATRICK NO!!! Mermaid Man and Barnacle Boy!” cried Spongebob as he approached their lifeless carcasses.

“You’re next, Spongebob.” Patrick said as he approached Spongebob. Patrick had taken off the Patricia clothes, wig, and makeup and is back to wearing his regular Hawaiian shorts. 

The delay gave Sandy and Squidward enough time to show up with tinted helmets, so Patrick couldn’t see their faces. “Reach for the sky, Patrick!” Sandy said as she and Squidward pointed their pistols at Patrick.

“You’ll never take me alive!” Patrick said as he ran past Sandy towards the exit. “Go to hell, Patrick!” said Squidward. Sandy and Squidward shot Patrick a few times, but he still was able to escape. 

“OW!” Patrick yelled in pain as he got shot.

Patrick ran for his life and got as far away as possible. He hid in a coral reef. “Phew!” Patrick said in relief. 

The Flying Dutchman appeared. “Well, Patrick, seeing as you and Plankton failed, and I don’t feel like waiting for your prison sentence to end when you get caught, but since ye did forfeit half your lifespan to the Flying Dutchman when you accepted the shinigami eyes deal… It’s time to go to Davey Jones’ Locker!” The Flying Dutchman laughed and there was lightning for dramatic effect as he grabbed Patrick and took him to Davey Jones’ Locker.

“AAAAAHHHH!!!!” Patrick yelled as he was transported to Davey Jones Locker.


French narrator: With the two Kiras Plankton and Patrick, and poor Mr. Krabs, Mermaid Man, and Barnacle Boy not making it, Spongebob, Sandy and Squidward tried to go back to their normal lives and move on. This is a parable of how absolute power corrupts absolutely.


“And everyone died. The End.” said Patrick as the screen went black.


© 2025 Bigfoot Writes Stuff


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Added on December 19, 2025
Last Updated on December 19, 2025