Sole Power

"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.

Synopsis
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.

Characters

 * Sonic the Hedgehog
 * Miles "Tails" Prower
 * Knuckles the Echidna
 * Amy Rose
 * Sticks the Badger
 * Lady Walrus
 * Wolfie
 * Dr. Eggman
 * Orbot
 * Cubot
 * Crab Bot (multiple)
 * Mega

Plot
Within a canyon on Bygone 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 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. 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 then admits to playing a noise whenever Sonic ran in order to trick everyone, but upon attempting to further explain, Amy refuses to listen to Eggman and even 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 the robot 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.

Goofs

 * 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).

Trivia

 * The device Tails uses to scan the Giant Robot uses the same model as his Reverse Polarizer.
 * Preview screenshots of "Sole Power" were accidentally released on the Sonic Twitter instead of those for "How to Succeed in Evil Without Really Trying", about a month before its air date in the United States.
 * Despite Eggman's claims of not having enough time to name his "Giant Robot," he has used this creation (or identical variants of it) before, even referring to it as the "Mega" in an earlier episode, "Unlucky Knuckles".