Sonic's only weakness is that he cannot swim, sinking like a rock if plunged to a deep body of water. The reason for this is because Yuji Naka had a misunderstanding about hedgehogs not being able to swim. The only exception is that he can swim in the Sonic the Hedgehog Adventure Gamebooks.
Sonic's demeanor is always easygoing, cool and carefree. However, he is often impatient, hates boredom, and possesses at times a short temper.
Sonic the Hedgehog is known for his speed, which is at a maximum of 186,000 miles per second. Team Sonic has never left Seaside Island in the Sonic Boom television series. Sonic's only weakness is that if he is thrown into deep water, he will sink like a rock.
Weakness. Super Sonic's weakness is that his Super Form is only temporarily, as he can only absorb and use the Chaos Emeralds' power for a limited time. If he remains in this form for too long, Sonic will run out of chaos energy and revert back to normal.
Goku has defeated many enemies just as powerful as Super Sonic, if not more powerful, and his mastery in martial arts means he can overpower Sonic in direct combat. And if the situation calls for it, Goku can use his Hakai to erase Sonic out of existence.
Shadow the Hedgehog - A Lab Experiment Gone Right
Robotnik tries to use Shadow to defeat Sonic. Appropriately named, Shadow acts as Sonic's shadow in power and ability. He matches his speed, strength, and street-smarts with ease. He even outranks Sonic in his use of the Chaos Emeralds.
Despite it being his signature ability, Sonic the Hedgehog is capable of losing his speed. The one time he did in Archie's discontinued comic book series, the Blue Blur's personality completely changes for the better.
Because Sonic can run between Mach 1 and Mach 5, that would mean that Knuckles can effectively lift between 100 and 500 metric tons. This easily makes him the strongest character in the entire franchise, let alone between him and Sonic.
Besides being unable to defeat certain enemies who are deemed too powerful, Dark Sonic had no specific weakness.
Miles “Tails” Prower
Miles Prower's fluffy design and gentle personality make him one of the cutest Sonic characters, and one of most beloved.
Dr. Robotnik, also known as Dr. Eggman, is the antagonist in nearly every Sonic the Hedgehog title.
According to Sega, Sonic is not allowed to be seen crying, but he can be seen holding a knife with malicious intent.
Aquaphobia. Sonic is commonly considered to be afraid of water. Different media present the issue in different ways, from a mere cautious objection to going into the water to a crippling horror of H2O in all its forms. At the very least, Sonic cannot swim.
Since Sonic 06, its has been hinted off and on that Sonic has feelings for Amy Rose. Although, Sonic and Amy's interests would conflict and wouldn't last too long. Amy has stated several times that she wants Sonic exclusive to her, while Sonic's nature is running around and forming new connections.
In a competition of speed between the Blue Blur and the Scarlet Speedster, it will take more than math and science to really comprehend their overall speed. However, taking all things we know into account, Flash would win a typical race against Sonic the Hedgehog and come out as the faster of the two.
Mario's determination, strength, and willpower are unlike any human being, though, and given certain circumstances, Mario would easily beat Sonic. This is reliant on his power-ups, power of the elements, and his allies, though, while Sonic doesn't really need anything except his blinding speed.
Historically, Sonic's most powerful form was the Super Sonic state he entered into when he used the combined power of all seven Chaos Emeralds. The Chaos Emeralds grant Sonic the power to move at near light speed, manipulate chaos energy to create a number of magical constructs, and even teleport matter.
Sonic's only weakness is that he cannot swim, sinking like a rock if plunged to a deep body of water. The reason for this is because Yuji Naka had a misunderstanding about hedgehogs not being able to swim. The only exception is that he can swim in the Sonic the Hedgehog Adventure Gamebooks.
Although Sonic possesses superhero-like speed that's essentially capable of stopping time, the frenetic action of the games is replaced with the speed limits of American highways, as a significant chunk of “Sonic the Hedgehog” settles into a road trip movie.
Though better and more winning than what might have been expected, Sonic's a little too unwitting to outrun its own self.
Despite what some modern Sonic fans might think about him, Doctor Ivo "Eggman" Robotnik will always remain one of the most iconic - and one of the most powerful - villains of Sonic the Hedgehog.
If the battle between Saitama and Sonic The Hedgehog could be decided by a foot race, Sonic would surely have the advantage. Saitama has demonstrated that he is incredibly fast by human standards, but Sonic is on a different level. If the blue hedgehog has any edge over Saitama it has to be his super speed.
That's impressive… but his Attack Potency is. Sonic wins on this one. Izuku may be have a lot of bravery, but it can be hard to beat an opponent who is WAY faster than you. Plus sonic has so much stamina.