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Duplicates number 2 through 6 of Calvin were created when Calvin used the Duplicator to create a duplicate of himself to do all his chores and schoolwork. This backfired, however, as the duplicate made four more of himself (he would've made more, but the duplicator overheated). The duplicates apparently assigned numbers to themselves, as they all looked identical to one another.

Appalled by what he'd done, he told them to be quiet, because his mom was going to have a fit if she'd found out. All of them were against this, naturally, until the real Calvin reminded him that he was the original Calvin and they had to do what he said. One of the duplicates suggested they put it to a vote as to who really should be in charge.

Later, Calvin made a deal saying each one only had to go to school one day of each week and "none of us will be the wiser". They each get in trouble every time they go. Calvin stops them by tricking them under the duplicator, putting them in a Transmogrifier, and transmogrifying them into worms. When Hobbes questions this, Calvin responds that he didn't want them to be unhappy. The transmogrified duplicates were never heard from again, although the incident of the duplicates has been referred to. They are the main antagonists of the title storyline for Scientific Progress Goes "Boink".

It can be assumed that Calvin put his duplicates (as worms) on his dad's dinner plate before he let them out into the front lawn, as Hobbes makes a reference to this in another strip, saying "...but try putting worms on your dad's [dinner plate]", after one of the worms said "You're sure you don't want to put us on your dad's dinner plate tonight before we go?"

Duplicate #2[]


Number 2 disobeys the original Calvin.

Duplicate number two was the first duplicate of Calvin. He appeared inside the duplicator, two days after the story started; his first appearance outside of the machine was the day after. After Calvin told him to do a lot of work, the Duplicate ran away to play outside (since he possessed all the qualities of the original), but before he could, Calvin's mom sent him to Calvin's room, thinking that he was the real Calvin. When he was in Calvin's room, he created more duplicates. It is unknown how this was possible, or who pushed the button that created Duplicate #3, as Duplicate #2 must have been inside the box at the time. Duplicate number two was the first one of the Duplicates to go to school.

Duplicate #3[]


Number 2 welcomes Number 3.

Duplicate number three first appeared six days after the story started. He rarely had any major appearances, because, when he was with all of the other Duplicates, it was unknown which one he was. It is unknown if he went to school.

Duplicate #4[]


Number 4 announcing his arrival from school.

Duplicate number four first appeared with the rest of the Duplicates, seven days after the story started. Duplicate number four was the third of the Duplicates to go to school. He was also sent to the principal's office, like Duplicate number two and Duplicate number five. It is unknown why he was sent to Principal Spittle's office, but it is known that he took some chalk.

Duplicate #5[]


Number 5 tries to explain his absence at school the last day

Duplicate number five was the second of the Duplicates to go to school. While in school, he is asked to demonstrate a math problem given yesterday. He tries to explain to Miss Wormwood that it wasn't him in school yesterday, but Duplicate number two, but is not believed and sent to the principal's office.

Duplicate #6[]

Calvin, Hobbes and Dupes

Duplicate number six was the fifth and final duplicate of Calvin. He first appeared with the rest of the Duplicates, seven days after the story started. Calvin and Hobbes both run upstairs only to find that Number 2 made four more duplicates, much to Calvin's dismay. They would have made more, but the duplicator malfunctioned.

Extra Duplicate[]

The Extra Duplicate was a character who appeared in one panel of the strip, whose leg and shirt is only visible.

See also: Extra duplicate