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Sole Power

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"Sole Power" is the nineteenth episode in the Sonic Boom television series. It first aired on 18 February 2015 in France and on 28 March 2015 in the United States.


Every time Sonic runs, his speed causes a deafening tone so he's forced to give up his speed until a solution can be found. The remedy comes from a very unusual place, Dr. Eggman.







Within a canyon on Seaside Island, Tails demonstrates his Tailsmobile's new voice-activated controls to Sonic. While Sonic is initially impressed, the vehicle ends up leaving him drenched after he orders it a drink. Sonic runs back to Tails' Workshop to find a towel, but as he does, he creates a deafening tone that hurts all the bystanders, including Tails, whose yelp prompts the Tailsmobile to move uncontrollably and ends up plummeting into a pit of lava; fortunately, Sonic returns just in time to knock Tails and the Tailsmobile back on solid ground. Tails blames Sonic for the predicament, but Sonic is clueless about the noise he was generating, causing Tails to conclude that Sonic is simply moving too fast to hear it. Despite being certain the sound was not coming from him, Sonic quickly proves himself wrong with a short run.

At Tails' Workshop, Tails runs some tests on Sonic, but is unable to figure out what is wrong and tells Sonic to avoid running until further notice. Despite thinking nothing of it, Sonic soon finds walking to be tedious, especially when he has to get a volleyball for his team to play with. When he returns though, they are ambushed by Crab Bots. As his team begins fighting, Sonic tries to join, but upon creating the horrible noise again, Amy tells him to sit this one out. Unsatisfied, Sonic begins to tell his teammates what to do, but only ends up distracting them, causing Sticks to tie him up while they finish. There, Sonic meets Eggman, who tells him the attack was accidently triggered by Orbot and Cubot; since it worked fine without him, Eggman felt unneeded, which Sonic could now relate to as his friends won without him. Eggman offers to talk it over as a kindred spirit, but Sonic's friends warns him not to trust him. With no other options, though, Sonic confides in Eggman, who shows some familiarity with the problem and invites Sonic to his lair for further analysis.

At Eggman's lair, Eggman's tests determine that Sonic is experiencing "velocity-to-energy ratio incompatibility", triggered by age, so Eggman offers Sonic a pair of new shoes that have power-absorbing insoles capable of preventing the sound. Despite some doubts, Sonic puts the shoes on and, true enough, the noise is gone. Thanking Eggman for the help, Sonic returns to his friends to demonstrate his recuperation, though as Sonic thinks Eggman has actually helped him, the doctor and his Giant Robot show up, revealing it all to be a trap. Sonic runs in to attack the robot, but it successfully repels him and appears to steadily gaining more power. As the others join, Tails' scanning device shows that the Giant Robot possesses no internal power source, but soon realize the existance of an external source: Sonic's new shoes, which converts his speed into power for the robot, making it stronger the more he runs.

Sonic tries taking the shoes off, but Eggman designed the shoes to be unremovable; not only that, they also serve as batteries, allowing the Giant Robot to continue functioning even when Sonic stops running. Eggman admits he played a noise whenever Sonic ran to trick everyone, but upon attempting to explain, Amy refuses to listen and destroys his holographic presentation of his scheme. Meanwhile, Sonic fights the Giant Robot in vain, but as Eggman gloats, Sonic gets an idea and starts running around faster and faster, generating so much power that the Giant Robot overloads and explodes. With the day saved, Sonic, referring to himself in third person, leaves for a run, while his team and Eggman agree that it is creepy when Sonic speaks like that.



Sonic's shoe error.

  • In the volleyball scene, Sonic's original shoes are shown despite being replaced in the scene before (specifically, when Sonic hits the volleyball a third time, in a shot that contains only him and Tails).

Title in other languages

Language Title Translation
Brazilian Portuguese Pés Descontrolados Uncontrolled feet
French Semelles d'enfer Soles of Hell
Finnish Pohjalliset Insoles
German Heiße Sohle Hot sole
Italian Le scarpe energetiche Energy shoes
Polish Wkładka mocy Insole power
Russian Энергия бега Energy of run
Turkish Tabana Kuvvet Sole Force


  • In Brazil, the scene where Giant Robot's head flies off was shortened.


  • The device Tails uses to scan the Giant Robot uses the same model as his Reverse Polarizer.
  • The way Sticks and Knuckles argue over Sonic's plan to stop the Giant Robot is a nod to their own respective character flaws: Sticks, whose sanity can be called into question, calls Sonic's plan "crazy", while Knuckles, who is not very intelligent, calls it "stupid". Conversely, Tails, who is quite smart, calls it "brilliant". Interestingly, Tails references his own character strength with a positive comment, while Sticks and Knuckles reference their own character flaws with negative comments.
  • Preview screenshots of "Sole Power" were accidentally released instead of those for "How to Succeed in Evil Without Really Trying" on the Sonic the Hedgehog Twitter, about a month before its air date in the United States.
  • The first Finnish title "Sielunvoimaa" means "Soul power", which has nothing to do with the episode. This is a grammar error, since both "Sole" and "Soul" are pronounced same way. The name was later changed to "pohjalliset" (Insoles).


  1. Sonic Boom : Sole Power. Retrieved on 6 March 2015.

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