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Sal Vidon.jpg Not part of Riordanverse

The following article/section is from the Sal & Gabi continuity under Rick Riordan Presents and not the Riordanverse canon.

The Entropy-Sweeper, or Sweeps is a scanner with a class-nine, formerly class-eight, artificial intelligence created by Gustavo Vidón to scan for calamitrons.

Sal & Gabi Duology

Sal & Gabi Break the Universe

Gustavo first uses it to search for Calamitrons on Sal Vidón after bringing Floramaria Vidón back for a fifth time. It senses nothing.

A few days later Sal uses it to scan Yasmany Robles' locker. It senses thirty-seven by it goes down one and tells Sal he inhaled it. It senses nothing from the alternate Gladis Machado and is shocked when she knows it's name.

Later that day it takes a liking to Gabi Real and the two are concerned when Sal snorts the calamatrons. After scanning the first and second floors it sensed no calamatrons.

The following week Gabi uses it to scan Sal when he snorts the calamatrons in Yasmany's locker and gets nothing. It also senses nothing when Meow-dad uses Ignacio Real as a portal to another universe.

Sal & Gabi Fix the Universe

After charging for the weekend, Sal turns it on and introduces it to the Remembranation Machine. After it is revealed that it tried to hack the remembration machine to become a class nine AI, which it must become on its own. After a brief argument, Sal convinces the remembration machine, who he names Brans, into tutoring it just as Gustavo reveals that he has been listening to the three.

A few hours later, Sal brings a Gabi Real from another universe to the Coral Castle and it startles her when they enter the remembranation machine. After it quarrels with Sal upon learning of Vorágine, the remembramation machine sends Gabi to another universe. It and the remembramation machine congratulate themselves on their quick thinking, but Sal tells them not to do it again. Sal panics when they say the other Gabi was right about the dangers of closing off a universe. He encourages them to be truthful towards his family, but Sal panics when he hears Gustavo come inside. As Sal hides in the remembramation machine, the two AIs say he is dead. Later that day, Sal and Gabi bring it to school with them, where it laments on its struggles of becoming class nine. Gabi cheers it up and they head to the student council room. Gabi says they need allies if they want it defeat her rogue self and reveals she has already recruited four versions of herself.

During parent-teacher conference, it tells Sal that the rogue Gabi has been quiet, much to their concern. After the rogue Gabi is subdued, Lucy Vidón helps it and Vorágine become properly introduced. A couple of months later during winter break it becomes a class nine AI and it and Voragine get married with, Sal, the Sisterverse, Principal Torres, Aventura, and Yasmany are attending the wedding. As Aventura finishes up the toilet's dress, Sal surprises FixGabi with her own Sal, much to the surprise of the others who thought he sacrificed himself to save her.


The entropy-sweeper is described as about the size of a weed wacker with handles to hold it while it scans for calamatrons and a screen that displays different emotions via emojis surounde by lights that flash and light up in every color of the rainbow.


The entropy-sweeper is known to be sarcastic and sassy. However it can be concerned and serious at times as it was worried when Gustavo Vidon assembled the Rememberation Machine in the living room of the Coral Castle and feared that it could be replaced and destroyed. It also tried to discourage Sal from snorting in too much calamatrons at once.


  • It says “I’m Alive!” whenever it is turned on and can turn it self on at will.
  • The only way it can truly be turned off is to remove its battery pack.
  • The entropy-sweeper is similar in character to Sumarbrander from the Magnus Chase and the Gods of Asgard trilogy.
Sal & Gabi Duology
Books: Sal & Gabi Break the Universe | Sal & Gabi Fix the Universe
Main Characters: Sal Vidón | Gabi Real | Yasmany Robles | Gladis Machado | Floramaria Vidón | Entropy-sweeper | FixGabi
Secondary Characters: Gustavo Vidón | Lucy Vidón | Dulce Sotolongo | Ignacio Real | Gloria Torres | Vorágine
Minor Characters: Reina Real | Gabi’s Fathers | Mr. Milagros | Dr. Doctorpants | Coach Lynott | Daniel Miranda Rivero | Juan Carlos Chaviano | Octavio Murillo | Mrs. Waked | Aventura Rios | Mr. Zacto | Adam Hoag | Mr. Cosquillas
Related Content: Carlos Hernandez | Rick Riordan Presents